CA2105886C - Sterile clips and instrument for their placement - Google Patents
Sterile clips and instrument for their placement Download PDFInfo
- Publication number
- CA2105886C CA2105886C CA002105886A CA2105886A CA2105886C CA 2105886 C CA2105886 C CA 2105886C CA 002105886 A CA002105886 A CA 002105886A CA 2105886 A CA2105886 A CA 2105886A CA 2105886 C CA2105886 C CA 2105886C
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- Canada
- Prior art keywords
- clip
- clips
- vessel
- right angle
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 241000124008 Mammalia Species 0.000 claims abstract description 5
- 230000002439 hemostatic effect Effects 0.000 claims description 8
- 210000004204 blood vessel Anatomy 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 description 13
- 239000004033 plastic Substances 0.000 description 8
- 229920003023 plastic Polymers 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000001356 surgical procedure Methods 0.000 description 7
- 229910000639 Spring steel Inorganic materials 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000002674 endoscopic surgery Methods 0.000 description 2
- 238000012976 endoscopic surgical procedure Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- -1 for example Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 235000002020 sage Nutrition 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/128—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for applying or removing clamps or clips
- A61B17/1285—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for applying or removing clamps or clips for minimally invasive surgery
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S227/00—Elongated-member-driving apparatus
- Y10S227/901—Surgical clip appliers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S227/00—Elongated-member-driving apparatus
- Y10S227/902—Surgical clips or staples
Abstract
An improved surgical instrument and sterile clip for ligating the vessel of a mammal. The clip has a pair of legs which are urged apart by the instrument to allow the clip to be placed on the vessel to be ligated.
Description
RTFRTtF CLIPS AND INSTRUMENT FOR THEIR PLACEMENT
The present invention relates to sterile clips used to ligate vessels in mammals and more particularly to sterile clips that are used to close or shut tubular vessels such as blood vessels within the body and to instruments for placing such clips on a vessel to ligate the vessel.
During many surgical procedures the surgeon will have to ligate or close various blood vessels before severing those vessels in order to prevent excessive bleeding during the surgical procedure. There are many types of mechanisms or devices for shutting off the vessel such as ligating clips, hemostatic clips and_the like. In some instances the surgeon will tie a ligature or suture about the vessel to close or shut the vessel. Many of the clips are metal and comprise a pair of legs which are connected at one end. The vessel to be ligated is placed between the legs and the legs forced together about the vessel to close the vessel. Clips have also been developed frog plastic materials but because plastics don't have the same stress and resiliency characteristics as aetals, usually the plastic clips include some type of locking mechanise so that when the legs are urged together about the vessel they are locked in a closed position.
taigating clips are well know in the art and are disclosed in numerous U.S. Patents: as for example, 3,439,523;
3,270,745; 3,363,628; 3,463,156; 3,439,522: 4,146,130:
4,449,530: 4,424,810: 4,418,694: and 4,638,804.
The present invention relates to sterile clips used to ligate vessels in mammals and more particularly to sterile clips that are used to close or shut tubular vessels such as blood vessels within the body and to instruments for placing such clips on a vessel to ligate the vessel.
During many surgical procedures the surgeon will have to ligate or close various blood vessels before severing those vessels in order to prevent excessive bleeding during the surgical procedure. There are many types of mechanisms or devices for shutting off the vessel such as ligating clips, hemostatic clips and_the like. In some instances the surgeon will tie a ligature or suture about the vessel to close or shut the vessel. Many of the clips are metal and comprise a pair of legs which are connected at one end. The vessel to be ligated is placed between the legs and the legs forced together about the vessel to close the vessel. Clips have also been developed frog plastic materials but because plastics don't have the same stress and resiliency characteristics as aetals, usually the plastic clips include some type of locking mechanise so that when the legs are urged together about the vessel they are locked in a closed position.
taigating clips are well know in the art and are disclosed in numerous U.S. Patents: as for example, 3,439,523;
3,270,745; 3,363,628; 3,463,156; 3,439,522: 4,146,130:
4,449,530: 4,424,810: 4,418,694: and 4,638,804.
Ligating clips must ensure closure of the vessel. That is, they should completely shut off blood flow and not allow leakage. Also, the clips must remain closed and should not "pop" open or break because of undue stresses.
Such opening or breaking would have disastrous results during surgery. Furthermore, the clips should not slip or slide out of position or off the vessel completely. While it doesn't take much force to collapse and close a vessel, the clips, to ensure closure of that vessel and to ensure that they remain in their closed position, require substantial force to close or change the configuration of the clip so that once closed it will remain in its closed position.
With the advent of endoscopic surgery, it has become very important to substantially reduce the forces to carry out virtually any of the manipulations required in an endoscopic surgical procedure such_as ligating a vessel.
In endoscopic surgery, while the business end of the instrument is placed within the body through an appropriate cannula or small incision, the manipulation of that business end by the surgeon is accoaplished outside the body. l~rs a result, it becomes more difficult to control the business end of the instrument since it is further removed from the actual operation of the instrument and any slight movement in the manipulation of the instrument outside the body is magnified at the business end of the instrument. Therefore, the greater the force required to close a clip the greatex the possibility of aovement of the business end of the instrument and the greater the possibility that the clip is improperly placed or improperly closed.
Such opening or breaking would have disastrous results during surgery. Furthermore, the clips should not slip or slide out of position or off the vessel completely. While it doesn't take much force to collapse and close a vessel, the clips, to ensure closure of that vessel and to ensure that they remain in their closed position, require substantial force to close or change the configuration of the clip so that once closed it will remain in its closed position.
With the advent of endoscopic surgery, it has become very important to substantially reduce the forces to carry out virtually any of the manipulations required in an endoscopic surgical procedure such_as ligating a vessel.
In endoscopic surgery, while the business end of the instrument is placed within the body through an appropriate cannula or small incision, the manipulation of that business end by the surgeon is accoaplished outside the body. l~rs a result, it becomes more difficult to control the business end of the instrument since it is further removed from the actual operation of the instrument and any slight movement in the manipulation of the instrument outside the body is magnified at the business end of the instrument. Therefore, the greater the force required to close a clip the greatex the possibility of aovement of the business end of the instrument and the greater the possibility that the clip is improperly placed or improperly closed.
The present invention substantially reduces the forces required to ligate a vessel. The present invention also provides a clip that ensures closure of the vessel once the clip is placed on the vessel. Furthermore, the present invention allows for ligating clips to be made from many different types of materials such as metals, plastics and the like.
Though the novel clip and instrument of the present invention is most appropriate for use in endoscopic procedures and will be so described in the following description it should be pointed out that the clip and/or -the instrument could also be used in laparoscopic prxedures and even standard open type surgical procedures.
In accordance with the present invention, our new sterile clip for ligating a vessel in a mammal comprises a pair of leg members. The leg members are disposed in close proximity to one another along substantially their entire length. Preferably, the leg meabers are substantially parallel to each other. The leg members are connected, preferably at one end thereof, by a meaber which restricts separation of the leg members. The connecting member should allow the open end of the leg members to be slightly pushed apart by forces applied to the open end of the leg member, but once those forces are removed the leg members should return to their original position.
The present invention also includes an instrument for applying the sterile clip as described above to a vessel to be ligated. Our new instrument includes a pair of surfaces with the surfaces diverging from each other from their proximal end to their distal end. These surfaces will accept a vessel to be ligated. That is, the surfaces may be placed on opposite sides of the vessel to be ligated. Once the vessel is appropriately positioned, the sterile clip as described above has its open end urged over the proximal end of the diverging surfaces. The diverging surfaces spread the legs of the clip slightly and the clip is slipped over the diverging surfaces. The diverging surfaces are closed or brought to a substantially parallel position to ligate the vessel positioned between the surfaces. Once the clip has been placed over the surfaces with the vessel therebetween, the clips are removed from the diverging surfaces and the clip remains on the ligated vessel. The diverging surfaces may then be removed from about the vessel.
The invention will be more fully described in conjunction with the specific embodiments given in the following drawings and description.
Figure 1 is a perspective view of a sterile clip of the present invention:
Figure 2 is a front view of a sterile clip of the present invention;
Figure 3 is a perspective view of one embodiment of an instrument of the present invention:
Figure 4 is an exploded isometric view of the instrument depicted in Figure 3:
Though the novel clip and instrument of the present invention is most appropriate for use in endoscopic procedures and will be so described in the following description it should be pointed out that the clip and/or -the instrument could also be used in laparoscopic prxedures and even standard open type surgical procedures.
In accordance with the present invention, our new sterile clip for ligating a vessel in a mammal comprises a pair of leg members. The leg members are disposed in close proximity to one another along substantially their entire length. Preferably, the leg meabers are substantially parallel to each other. The leg members are connected, preferably at one end thereof, by a meaber which restricts separation of the leg members. The connecting member should allow the open end of the leg members to be slightly pushed apart by forces applied to the open end of the leg member, but once those forces are removed the leg members should return to their original position.
The present invention also includes an instrument for applying the sterile clip as described above to a vessel to be ligated. Our new instrument includes a pair of surfaces with the surfaces diverging from each other from their proximal end to their distal end. These surfaces will accept a vessel to be ligated. That is, the surfaces may be placed on opposite sides of the vessel to be ligated. Once the vessel is appropriately positioned, the sterile clip as described above has its open end urged over the proximal end of the diverging surfaces. The diverging surfaces spread the legs of the clip slightly and the clip is slipped over the diverging surfaces. The diverging surfaces are closed or brought to a substantially parallel position to ligate the vessel positioned between the surfaces. Once the clip has been placed over the surfaces with the vessel therebetween, the clips are removed from the diverging surfaces and the clip remains on the ligated vessel. The diverging surfaces may then be removed from about the vessel.
The invention will be more fully described in conjunction with the specific embodiments given in the following drawings and description.
Figure 1 is a perspective view of a sterile clip of the present invention:
Figure 2 is a front view of a sterile clip of the present invention;
Figure 3 is a perspective view of one embodiment of an instrument of the present invention:
Figure 4 is an exploded isometric view of the instrument depicted in Figure 3:
Figures 5 a, b and c are a perspective view, top view and side view, respectively, of the nose or business end of an instrument according to the present invention with the instrument in a position to accept a vessel to be ligated:
Figures 6 a, b and c are a perspective view, top view and side view, respectively, of the nose of the instrument depicted in Figure 5 wherein a sterile clip of the present invention has been placed on the vessel to ligate the vessel:
Figures 7 a, b and c are a perspective view, top view and side view, respectively, of the nose of the instrument depicted in Figure 5 with the instrument positioned to release the ligated vessel from the instrument:
Figure 8 is an enlarged cross-sectional view taken along line 8-8 of Figure 5b;
Figure 9 is an enlarged cross-sectional view taken along line 9-9 of Figure 6b;
Figure 10 is an enlarged cross-sectional view taken along line 10-10 of Figure 7b;
Figure 11 is an exploded perpective view of another embodiment on an instrument of the present invention:
Figure 12 is an enlarged cut-away perspective view of the drive mechanism of the instrument depicted in Figure 11 before the instrument has been actuated:
Figures 6 a, b and c are a perspective view, top view and side view, respectively, of the nose of the instrument depicted in Figure 5 wherein a sterile clip of the present invention has been placed on the vessel to ligate the vessel:
Figures 7 a, b and c are a perspective view, top view and side view, respectively, of the nose of the instrument depicted in Figure 5 with the instrument positioned to release the ligated vessel from the instrument:
Figure 8 is an enlarged cross-sectional view taken along line 8-8 of Figure 5b;
Figure 9 is an enlarged cross-sectional view taken along line 9-9 of Figure 6b;
Figure 10 is an enlarged cross-sectional view taken along line 10-10 of Figure 7b;
Figure 11 is an exploded perpective view of another embodiment on an instrument of the present invention:
Figure 12 is an enlarged cut-away perspective view of the drive mechanism of the instrument depicted in Figure 11 before the instrument has been actuated:
Figure 13 is an enlarged perspective view of the distal end of the instrument depicted in Figure 11 before the instrument has been actuated:
Figure 14 is a view similar to Figure 12 after the instrument has been actuated; and Figure 15 is a view similar to Figure 13 after the instrument has been actuated.
l0 Referring to the drawings in Figures 1 and 2, there is shown a preferred embodiment of the sterile clip of the present invention. The clip is used to ligate or close tubular vessels in a mammal and more specifically, to close blood vessels in the body of a human during endoscopic surgical procedures. The sterile clip 20 comprises a pair of leg members 21 and 22. The leg members are in close proximity to one another. along their entire length. In the embodiaent, each of the leg meabers is a right angle member and comprises a relatively flat longitudinal section 23 and 24 and a perpendicular section and 26 extending from one edge of a longitudinal 25 section. The perpendicular sections of the leg members face each other and are the portion of the clip which contact the vessel to ligate the vessel. The perpendicular sections are joined together at one end of the clip by a connecting member 27 which has a cross-sectional shape similar to that of a "horse-shoe" as shown. The connecting meaber restricts separation of the leg members from each other. In certain embodiments of the sterile clip of the present invention, the connecting member is made of resilient material so that the legs may S$N-119 be slightly parted to insert the already closed vessel and once inserted the leg members are allowed to return to their original position to maintain the vessel ligated.
Ligating clips may be applied to blood vessels during a surgical procedure either as a single clip using a single clip applier or utilizing a multiple clip applier. The instrument may be inserted through a cannula during an endoscopic procedure and if a multiple clip applier is being used the instrument may ligate or place clips on a number of vessels. Often in a surgical procedure there is a technique called ligate and divide. In this technique, an instrument is used to place two ligating clips on the same vessel in relatively close proximity and the surgeon either utilizing an appropriate instrument or a scalpel will cut the vessel between the two ligating clips. In Figure 3 there is shown a ligating and dividing instrument utilizing the sterile clips and instrument of the present invention. The instrument 30 comprises a handle portion 31 which contains various actuating and control mechanisms for the surgeon and a nose portion 32 which places the clips and cuts the vessel between appropriately placed clips. The nose portion is connected to the handle portion by a magazine housing 33 which is designed to fit through a cannula to allow the nose_portion to be positioned within the surgical environment and accoaplish the desired tasks.
Figure 4 is an expanded isometric view of the various parts of the instrument depicted in Figure 3. The instrument comprises a handle 40 and attached to one end of the handle is a magazine housing 41. One end of the housing is attached to the handle while the opposite end of the housing is the nose 42 or business end of the _ g _ instrument and is designed to place clips in accordance with the present invention. The nose or business end of the magazine housing contains a horizontal slot 42 disposed substantially in the center of the nose and two perpendicular slots 44 and 45 disposed perpendicular and adjacent to opposite ends of the horizontal slot.
Positioned within the magazine housing and extending from the handle to the nose is a tweeter member 46. A portion of this member grips the vessel to be ligated. One end 47 of the tweeter member is positioned within the handle so that the handle and/or magazine housing may be reciprocated back and forth with respect to the tweeter member. The opposite end of the tweeter member fits into the horizontal slot in the nose of the magazine. This end of the tweeter member comprises a pair of spring steel flaps 49 and 50 joined together at the end proximal to the handle and stressed in such a manner that they deflect from each other at the end distal to the handle. In the forward most position of the magazine the spring steel end of the tweeter member is aligned with the end of the nose of the aagazine housing. In the rearwardmost position of the magazine housing the spring steel end of the tweeter saber extends through the horizontal slot and beyond the nose of the magazine housing. Extending substantially the length of the tweeter meaber is a slot 53. A knife member 54 is positioned to reciprocate back and forth in this slot. The cutting portion 55 of the knife member in its forward-most position extends to the tip of the tweeter member and in its rearwardaost position is spaced a short distance therefrom. Also contained within the magazine housing is a clip driver 56. The driver comprises a pair of metal legs 58 and 59 Which extend from the handle to the nose of the magazine housing. One leg of the driver fits within one perpendicular slot in the nose of the _ g _ housing and the other leg of the driver fits into the other perpendicular slot in the nose of the housing.
Positioned on the front end of the driver is a clip cartridge 60. In this embodiment there are ten clips shown, five on each side aligned with a leg of the driver.
The appropriate actuating members for moving the magazine housing, positioning the clips, driving the clips and moving the knife or reciprocating the knife are provided in the handle.
The operation of the instrument will be more fully described in conjunction with Figures 5, 6 and 7.
Referring to Figures 5a, b and c, there is shown an enlarged view of the nose portion of an instrument as described in conjunction with Figure 4. Figure 5a is a perspective view of the nose section, Figure 5b is a top view and Figure 5c is a side view. In these Figures, the nose portion 60 has been pushed to _its rearwardmost position. The two surfaces 61 and 62 of the tweezer portion extend beyond the nose and diverge frog each other to accept a vessel 63 to be ligated.. As more clearly shown in Figure 5c, the tweezer portion extends through the horizontal slot 64 in the nose portion. There also is depicted the slot 65 in the tweezer portion which allows for moveaent of the knife. as aay be seen in this position of the instruaent, the clips 66 are in place and positioned in the perpendicular slots 67 in the nose portion. Once the diverging surfaces of the tweeter portion are placed about the vessel, the nose portion may be pushed forwardly. The nose portion pushed to its forwardmost position is shown in Figures 6 a, b and c.
Figure 6a is a perspective view of the nose portion in its forwardmost position, Figure 6b is a top view and Figure 6c is a side view. By moving the magazine portion 60 forwardly, the tweezers surfaces 61 and 62 are brought together to close the vessel 63. Simultaneously, the clips 66 are moved forwardly so that the open end of a clip rides over the tweeter surfaces. At this point, the knife may be actuated to sever the vessel between the clips. The next step is to bring the magazine housing 60 back to its rearwardmost or original position which is depicted in Figures 7a, b and c. As may be seen, the tweeter surfaces 61 and 62 extend forwardly frog the nose l0 portion and are held together by the clips 66 which ride on the very outer edges of the tweeter surfaces. Once the clips are totally free from the nose of the magazine, they will drop or be removed from the tweeter surfaces. This will allow the tweeter surfaces to open and release the ligated and divided vessel 63.
The action of the clips in closing the vessel and the release of the clips from the tweeter surfaces say be 'ore fully understood by referring to Figures 8, 9 and 10_ which are enlarged cross-sectional views of the nose of the instrument as depicted in Figures 5b, 6b, and 7b, respectively. Referring to Figure 8 the clips 70 are shown in the nose of the instrument in the position they have before being placed on a vessel. The legs 71 and 72 of the clip are in a position where there is the smallest gap (A) between the legs. Figure 9 shows the nose portion of the instrument as shown in Figure 6b. The nose portion is in its forwardmost position to push the clips 70 over the tweeter surfaces 73 and 74 and close a vessel.
As may be seen, the tweeter surfaces tend to open the gap (A) between the legs of the clip slightly to allow the clip to move over the tweeter surfaces. Once this is accomplished, the clips remain on the tweeter surfaces as the magazine is brought to it rearward nose position.
STsN-119 This frees the tweezer surfaces from the nose and because the tweezer surfaces are stressed to diverge from each other, they place a force on the curve 75 between the perpendicular leg 76 and the horizontal leg 77 of the clip so that the clip is removed or slides off in a sideways manner from the tweezer surfaces.
Referring to Figure 11 of the drawings, there is shown an exploded view of another embodiment of a clip applier instsrument according to the present invention. In this embodiment, the instrument comprises a right handle half 100 and a left handle half 101. Positioned between the handle halves is a trigger mechanism 102. The trigger mechanism is pivotally mounted on a pivot pin 103 between the handle halves. Attached at the bottom of the trigger mechanism is a drive link 104 which in turn is attached to the bottom of the drive pusher 105. Attached to the drive pusher is a-first drive bar 106. As is sore clearly seen in Figure 12, a tab 107 extends upwardly from the first drive bar at the proximal end thereof. This tab fits in a slot at the rear or proxiaal end of a second drive bar 108. The second drive bar sits on top of the first drive bar. Mounted on top of the second drive bar is a pivotal timing tab 109. when the trigger mechanism is squeezed, the drive link forces the drive pusher forward. Both the first and second drive bars are also urged forwardly. The first drive bar is urged forwardly by the drive pusher and the second drive bar is urged forwardly by the upstanding tab 107 pushing the timing tab 109. when the timing tab moves to the end of the timing plate 111, it is pivoted out of the way of the upstanding tab. This stops the forward motion of the second drive bar while allowing the first drive bar to continue its forward motion as the trigger is squeezed. On release of the trigger, a standard leaf spring mechanism (not shown for the sake of clarity) returns the trigger mechanism, drive pusher and drive bar to their original positions.
Extending from the front of the handle halves is a hollow support tube 120. The first and second drive bars are disposed within the support tube. At the distal end of the first drive bar and attached thereto is a pair of spaced apart clip drivers 121 and 122.
Also mounted on the handle halves and extending down the support tube is a tweeter mechanism 123. The tweeter mechanism terminates at the distal end of the instrument in opposed grasping fingers 124 and 125 disposed between the pair of clip drivers, as is more clearly shown in Figure 13. Attached to the distal end of the second drive bar is the tweezes actuating means 126. The means terminates at its distal end in a pair of stationary spaced apart fingers 127 and 128 which when moved forwardly will encompass the tweeter fingers to close the fingers about a vessel placed betwen the tweeter fingers.
A series of ligating clips 129 are stored in groves 130 disposed on opposite sides of the stationary fingers. The clip drivers terminate at their distal end in abutting relationship to the last clip in the series of clips. The clips are configured as shown in Figure 1 with the U-shaped portion of the clip riding in the open grooves 131 at the distal end of the twezer actuating means. The U-shaped portion of the clip is engaged by a flexible dog 132 attached to the clip drivers. The flexibility of the dog allows it to ride over the next clip in the series when the clip drivers are retracted.
Referring to Figures 12 and 13, there is shown in Figure 12 an enlarged cut-away view of the driving mechanism within the handle. Figure 13 is a perspective view of the distal end of the instrument. Both Figures show the instrument prior to the trigger being operated. As shown in Figure 12, the upstanding tab 107 on the first drive bar 106 is positioned behind the timing tab 109 on the second drive bar. In this position, the distal end of the instrument is as shown in Figure 13 and a vessel 140 to be closed is positioned betwen the tweezer fingers 124 and 125. On squeezing the trigger, the first drive bar moves forwardly pushing the timing tab and the second drive bar forwardly to the position shown in Figure 14. When the drive mechanism is in this position, the distal end of the instrument is as shown in Figure 15. The second drive bar has pushed the stationary fingers 127 and 128 over the tweezer fingers 124 and 125 to close the vessel between the fingers. Simultaneously, the first drive bar has pushed the series of clips fowardly so that the first clip in each series is immediately adjacent the vessel shown in Figure 15.
On continuing to squeeze the trigger, the first bar urges the clips over the vessel to close the vessel and coves the clips off the distal end of the clip driver tracks 121 and 122. On releasing the trigger, both drive bars and their related aechanisms return to their original position leaving the clips on the vessel and freeing the insturment from the vessel.
An advantage of the present invention is that the clips used may more aggressively grasp the vessel to be closed than prior art clips. The surface of the clips that contact the vessel to be closed may be scored or even include dimples and the like to ensure closure and prevent movement of the clip once it is placed on the vessel.
Because less force is required to place the clip on the vessel there is reduced possibility of cutting or lacerating the vessel and greater assurance of positive closing of the vessel throughout the surgical procedure.
If desired, a detent or raised portion may be disposed on the inside of the slots in which the clips ride or move.
Such a detent is placed in line with the connecting member of the clip sa that when the housing is moved rearwardly to release the clips, the detent will crimp the connecting member of the clip to further insure positive placement of the clip.
While the spring steel flaps of the tweeter member of the instrument have been described and shown as uninterrupted surfaces, these diverging surfaces could comprise a plurality of fingers. By splitting or interrupting the surface into a plurality of fingers sore than two clips could be applied at the sage tine.
The instrument may be made from various materials such as aetals, preferably stainless steel, plastic preferably a polycarbonate resin and the like. Osually if the instrument is aade frog stainless steel the instruaent will be reusable while if the instrument is made frog plastic materials the instruaent will be disposable. In certain embodiments of the instrument of the present invention the instruaent aay be designed to accept a replaceable cartridge of clips and this may be accoaplished with either a reusable instrument or semi-disposable instrument which is meant to be used a number of times on a single patient.
Also, while the instrument has been described for placing ligating clips it should be appreciated that the feed member for the clips could be disengaged and the instrument used for grasping and manipulating vessels or tissue without ligation. Furthermore, if desired, means could be included with the instrument to heat the spring steel flaps so that the instrument could also be used for caurterizing vessels or tissue.
Surprisingly, the clips of the present invention will accept various sizes of vessels as the clip sizes itself as it is placed on the vessel.
A preferred clip of the present invention is shaped as described in conjunction with Figures 1 and 2. In this design the member connecting the legs of the clip not in line with the surface of the legs which will contact the vessel to be closed. This design allows the entire leg to be opened more or less uniformly along the entire length of the leg making the leg easier to part and placing less stress on the connecting member.
Another advantage of the present invention is that the clip and instrument of the present~invention may be used in smaller diameter cannula than prior art clips used to close the same size vessels. Since the clip of the present invention is already in its closed configuration and no gripers or jaws are necessary to contact the outer surface of the clip in order to close the clip the overall diameter of the instrument may be reduced when compared to prior art instruments used for the same function. This allows the instrument to be used in smaller size cannula and reduces the trauma to the patent.
The clips of the present invention may be made from various well-known materials, for example, titanium, tantalum, stainless steel, the memory metals having super elastic characteristics and the like or the various plastic materials that have some resiliency such as the polyolefins, the glycolide-lactide polymers and similar plastic materials.
Having now described the present invention, it will be readily apparent to those skilled in the art that various modifications and alterations may be made to the present invention without departing from the spirit and scope thereof.
Figure 14 is a view similar to Figure 12 after the instrument has been actuated; and Figure 15 is a view similar to Figure 13 after the instrument has been actuated.
l0 Referring to the drawings in Figures 1 and 2, there is shown a preferred embodiment of the sterile clip of the present invention. The clip is used to ligate or close tubular vessels in a mammal and more specifically, to close blood vessels in the body of a human during endoscopic surgical procedures. The sterile clip 20 comprises a pair of leg members 21 and 22. The leg members are in close proximity to one another. along their entire length. In the embodiaent, each of the leg meabers is a right angle member and comprises a relatively flat longitudinal section 23 and 24 and a perpendicular section and 26 extending from one edge of a longitudinal 25 section. The perpendicular sections of the leg members face each other and are the portion of the clip which contact the vessel to ligate the vessel. The perpendicular sections are joined together at one end of the clip by a connecting member 27 which has a cross-sectional shape similar to that of a "horse-shoe" as shown. The connecting meaber restricts separation of the leg members from each other. In certain embodiments of the sterile clip of the present invention, the connecting member is made of resilient material so that the legs may S$N-119 be slightly parted to insert the already closed vessel and once inserted the leg members are allowed to return to their original position to maintain the vessel ligated.
Ligating clips may be applied to blood vessels during a surgical procedure either as a single clip using a single clip applier or utilizing a multiple clip applier. The instrument may be inserted through a cannula during an endoscopic procedure and if a multiple clip applier is being used the instrument may ligate or place clips on a number of vessels. Often in a surgical procedure there is a technique called ligate and divide. In this technique, an instrument is used to place two ligating clips on the same vessel in relatively close proximity and the surgeon either utilizing an appropriate instrument or a scalpel will cut the vessel between the two ligating clips. In Figure 3 there is shown a ligating and dividing instrument utilizing the sterile clips and instrument of the present invention. The instrument 30 comprises a handle portion 31 which contains various actuating and control mechanisms for the surgeon and a nose portion 32 which places the clips and cuts the vessel between appropriately placed clips. The nose portion is connected to the handle portion by a magazine housing 33 which is designed to fit through a cannula to allow the nose_portion to be positioned within the surgical environment and accoaplish the desired tasks.
Figure 4 is an expanded isometric view of the various parts of the instrument depicted in Figure 3. The instrument comprises a handle 40 and attached to one end of the handle is a magazine housing 41. One end of the housing is attached to the handle while the opposite end of the housing is the nose 42 or business end of the _ g _ instrument and is designed to place clips in accordance with the present invention. The nose or business end of the magazine housing contains a horizontal slot 42 disposed substantially in the center of the nose and two perpendicular slots 44 and 45 disposed perpendicular and adjacent to opposite ends of the horizontal slot.
Positioned within the magazine housing and extending from the handle to the nose is a tweeter member 46. A portion of this member grips the vessel to be ligated. One end 47 of the tweeter member is positioned within the handle so that the handle and/or magazine housing may be reciprocated back and forth with respect to the tweeter member. The opposite end of the tweeter member fits into the horizontal slot in the nose of the magazine. This end of the tweeter member comprises a pair of spring steel flaps 49 and 50 joined together at the end proximal to the handle and stressed in such a manner that they deflect from each other at the end distal to the handle. In the forward most position of the magazine the spring steel end of the tweeter member is aligned with the end of the nose of the aagazine housing. In the rearwardmost position of the magazine housing the spring steel end of the tweeter saber extends through the horizontal slot and beyond the nose of the magazine housing. Extending substantially the length of the tweeter meaber is a slot 53. A knife member 54 is positioned to reciprocate back and forth in this slot. The cutting portion 55 of the knife member in its forward-most position extends to the tip of the tweeter member and in its rearwardaost position is spaced a short distance therefrom. Also contained within the magazine housing is a clip driver 56. The driver comprises a pair of metal legs 58 and 59 Which extend from the handle to the nose of the magazine housing. One leg of the driver fits within one perpendicular slot in the nose of the _ g _ housing and the other leg of the driver fits into the other perpendicular slot in the nose of the housing.
Positioned on the front end of the driver is a clip cartridge 60. In this embodiment there are ten clips shown, five on each side aligned with a leg of the driver.
The appropriate actuating members for moving the magazine housing, positioning the clips, driving the clips and moving the knife or reciprocating the knife are provided in the handle.
The operation of the instrument will be more fully described in conjunction with Figures 5, 6 and 7.
Referring to Figures 5a, b and c, there is shown an enlarged view of the nose portion of an instrument as described in conjunction with Figure 4. Figure 5a is a perspective view of the nose section, Figure 5b is a top view and Figure 5c is a side view. In these Figures, the nose portion 60 has been pushed to _its rearwardmost position. The two surfaces 61 and 62 of the tweezer portion extend beyond the nose and diverge frog each other to accept a vessel 63 to be ligated.. As more clearly shown in Figure 5c, the tweezer portion extends through the horizontal slot 64 in the nose portion. There also is depicted the slot 65 in the tweezer portion which allows for moveaent of the knife. as aay be seen in this position of the instruaent, the clips 66 are in place and positioned in the perpendicular slots 67 in the nose portion. Once the diverging surfaces of the tweeter portion are placed about the vessel, the nose portion may be pushed forwardly. The nose portion pushed to its forwardmost position is shown in Figures 6 a, b and c.
Figure 6a is a perspective view of the nose portion in its forwardmost position, Figure 6b is a top view and Figure 6c is a side view. By moving the magazine portion 60 forwardly, the tweezers surfaces 61 and 62 are brought together to close the vessel 63. Simultaneously, the clips 66 are moved forwardly so that the open end of a clip rides over the tweeter surfaces. At this point, the knife may be actuated to sever the vessel between the clips. The next step is to bring the magazine housing 60 back to its rearwardmost or original position which is depicted in Figures 7a, b and c. As may be seen, the tweeter surfaces 61 and 62 extend forwardly frog the nose l0 portion and are held together by the clips 66 which ride on the very outer edges of the tweeter surfaces. Once the clips are totally free from the nose of the magazine, they will drop or be removed from the tweeter surfaces. This will allow the tweeter surfaces to open and release the ligated and divided vessel 63.
The action of the clips in closing the vessel and the release of the clips from the tweeter surfaces say be 'ore fully understood by referring to Figures 8, 9 and 10_ which are enlarged cross-sectional views of the nose of the instrument as depicted in Figures 5b, 6b, and 7b, respectively. Referring to Figure 8 the clips 70 are shown in the nose of the instrument in the position they have before being placed on a vessel. The legs 71 and 72 of the clip are in a position where there is the smallest gap (A) between the legs. Figure 9 shows the nose portion of the instrument as shown in Figure 6b. The nose portion is in its forwardmost position to push the clips 70 over the tweeter surfaces 73 and 74 and close a vessel.
As may be seen, the tweeter surfaces tend to open the gap (A) between the legs of the clip slightly to allow the clip to move over the tweeter surfaces. Once this is accomplished, the clips remain on the tweeter surfaces as the magazine is brought to it rearward nose position.
STsN-119 This frees the tweezer surfaces from the nose and because the tweezer surfaces are stressed to diverge from each other, they place a force on the curve 75 between the perpendicular leg 76 and the horizontal leg 77 of the clip so that the clip is removed or slides off in a sideways manner from the tweezer surfaces.
Referring to Figure 11 of the drawings, there is shown an exploded view of another embodiment of a clip applier instsrument according to the present invention. In this embodiment, the instrument comprises a right handle half 100 and a left handle half 101. Positioned between the handle halves is a trigger mechanism 102. The trigger mechanism is pivotally mounted on a pivot pin 103 between the handle halves. Attached at the bottom of the trigger mechanism is a drive link 104 which in turn is attached to the bottom of the drive pusher 105. Attached to the drive pusher is a-first drive bar 106. As is sore clearly seen in Figure 12, a tab 107 extends upwardly from the first drive bar at the proximal end thereof. This tab fits in a slot at the rear or proxiaal end of a second drive bar 108. The second drive bar sits on top of the first drive bar. Mounted on top of the second drive bar is a pivotal timing tab 109. when the trigger mechanism is squeezed, the drive link forces the drive pusher forward. Both the first and second drive bars are also urged forwardly. The first drive bar is urged forwardly by the drive pusher and the second drive bar is urged forwardly by the upstanding tab 107 pushing the timing tab 109. when the timing tab moves to the end of the timing plate 111, it is pivoted out of the way of the upstanding tab. This stops the forward motion of the second drive bar while allowing the first drive bar to continue its forward motion as the trigger is squeezed. On release of the trigger, a standard leaf spring mechanism (not shown for the sake of clarity) returns the trigger mechanism, drive pusher and drive bar to their original positions.
Extending from the front of the handle halves is a hollow support tube 120. The first and second drive bars are disposed within the support tube. At the distal end of the first drive bar and attached thereto is a pair of spaced apart clip drivers 121 and 122.
Also mounted on the handle halves and extending down the support tube is a tweeter mechanism 123. The tweeter mechanism terminates at the distal end of the instrument in opposed grasping fingers 124 and 125 disposed between the pair of clip drivers, as is more clearly shown in Figure 13. Attached to the distal end of the second drive bar is the tweezes actuating means 126. The means terminates at its distal end in a pair of stationary spaced apart fingers 127 and 128 which when moved forwardly will encompass the tweeter fingers to close the fingers about a vessel placed betwen the tweeter fingers.
A series of ligating clips 129 are stored in groves 130 disposed on opposite sides of the stationary fingers. The clip drivers terminate at their distal end in abutting relationship to the last clip in the series of clips. The clips are configured as shown in Figure 1 with the U-shaped portion of the clip riding in the open grooves 131 at the distal end of the twezer actuating means. The U-shaped portion of the clip is engaged by a flexible dog 132 attached to the clip drivers. The flexibility of the dog allows it to ride over the next clip in the series when the clip drivers are retracted.
Referring to Figures 12 and 13, there is shown in Figure 12 an enlarged cut-away view of the driving mechanism within the handle. Figure 13 is a perspective view of the distal end of the instrument. Both Figures show the instrument prior to the trigger being operated. As shown in Figure 12, the upstanding tab 107 on the first drive bar 106 is positioned behind the timing tab 109 on the second drive bar. In this position, the distal end of the instrument is as shown in Figure 13 and a vessel 140 to be closed is positioned betwen the tweezer fingers 124 and 125. On squeezing the trigger, the first drive bar moves forwardly pushing the timing tab and the second drive bar forwardly to the position shown in Figure 14. When the drive mechanism is in this position, the distal end of the instrument is as shown in Figure 15. The second drive bar has pushed the stationary fingers 127 and 128 over the tweezer fingers 124 and 125 to close the vessel between the fingers. Simultaneously, the first drive bar has pushed the series of clips fowardly so that the first clip in each series is immediately adjacent the vessel shown in Figure 15.
On continuing to squeeze the trigger, the first bar urges the clips over the vessel to close the vessel and coves the clips off the distal end of the clip driver tracks 121 and 122. On releasing the trigger, both drive bars and their related aechanisms return to their original position leaving the clips on the vessel and freeing the insturment from the vessel.
An advantage of the present invention is that the clips used may more aggressively grasp the vessel to be closed than prior art clips. The surface of the clips that contact the vessel to be closed may be scored or even include dimples and the like to ensure closure and prevent movement of the clip once it is placed on the vessel.
Because less force is required to place the clip on the vessel there is reduced possibility of cutting or lacerating the vessel and greater assurance of positive closing of the vessel throughout the surgical procedure.
If desired, a detent or raised portion may be disposed on the inside of the slots in which the clips ride or move.
Such a detent is placed in line with the connecting member of the clip sa that when the housing is moved rearwardly to release the clips, the detent will crimp the connecting member of the clip to further insure positive placement of the clip.
While the spring steel flaps of the tweeter member of the instrument have been described and shown as uninterrupted surfaces, these diverging surfaces could comprise a plurality of fingers. By splitting or interrupting the surface into a plurality of fingers sore than two clips could be applied at the sage tine.
The instrument may be made from various materials such as aetals, preferably stainless steel, plastic preferably a polycarbonate resin and the like. Osually if the instrument is aade frog stainless steel the instruaent will be reusable while if the instrument is made frog plastic materials the instruaent will be disposable. In certain embodiments of the instrument of the present invention the instruaent aay be designed to accept a replaceable cartridge of clips and this may be accoaplished with either a reusable instrument or semi-disposable instrument which is meant to be used a number of times on a single patient.
Also, while the instrument has been described for placing ligating clips it should be appreciated that the feed member for the clips could be disengaged and the instrument used for grasping and manipulating vessels or tissue without ligation. Furthermore, if desired, means could be included with the instrument to heat the spring steel flaps so that the instrument could also be used for caurterizing vessels or tissue.
Surprisingly, the clips of the present invention will accept various sizes of vessels as the clip sizes itself as it is placed on the vessel.
A preferred clip of the present invention is shaped as described in conjunction with Figures 1 and 2. In this design the member connecting the legs of the clip not in line with the surface of the legs which will contact the vessel to be closed. This design allows the entire leg to be opened more or less uniformly along the entire length of the leg making the leg easier to part and placing less stress on the connecting member.
Another advantage of the present invention is that the clip and instrument of the present~invention may be used in smaller diameter cannula than prior art clips used to close the same size vessels. Since the clip of the present invention is already in its closed configuration and no gripers or jaws are necessary to contact the outer surface of the clip in order to close the clip the overall diameter of the instrument may be reduced when compared to prior art instruments used for the same function. This allows the instrument to be used in smaller size cannula and reduces the trauma to the patent.
The clips of the present invention may be made from various well-known materials, for example, titanium, tantalum, stainless steel, the memory metals having super elastic characteristics and the like or the various plastic materials that have some resiliency such as the polyolefins, the glycolide-lactide polymers and similar plastic materials.
Having now described the present invention, it will be readily apparent to those skilled in the art that various modifications and alterations may be made to the present invention without departing from the spirit and scope thereof.
Claims (14)
1. Sterile clip for ligating a vessel in a mammal, said clip comprising a pair of right angle members, each right angle member comprising a pair of legs disposed at right angles to each other, one leg of each of said right angle member being in substantially the same plane and the other leg of each right angle member being in close proximity to and in facing relationship with each other, and a connecting member joining said right angle members said connecting member restricting separation of said right angle members.
2. A sterile clip according to claim 1 wherein the legs of the right angle members in facing relationship with each other are substantially parallel to each other along substantially their entire length.
3. A sterile clip according to claim 1 wherein the area of the right angle members connecting the legs is smoothly curved.
4. A sterile clip according to claim 1 wherein the connecting member is substantially semi-circular in shape and connects the legs of the right angle members which legs are in close proximity to each other.
5. A sterile clip according to claim 4 wherein the connecting member is disposed along the length of the legs of the right angle member which legs are in close proximity to each other.
6. A hemostatic clip for closing a tubular blood vessel in the body of a human, said clip comprising a pair of right angle members, each right angle member comprising a pair of legs disposed at right angles to each other, one leg of said right angle member being in substantially the same plane and the other leg of each said right angle member being in close proximity and in facing relationship to each other and a resilient member connecting said right angle members and urging said legs in facing relationship towards one another.
7. A hemostatic clip according to claim 6 wherein the legs of said right angle members in facing relationship are substantially parallel to each other along their entire length.
8. A hemostatic clip according to claim 6 wherein the portion of the right angle members which connects the legs of the right angle members is smoothly curved to facilitate placement of the clip on a vessel.
9. A hemostatic clip according to claim 6 wherein the resilient member connecting said right angle members is substantially semi-circular in shape and connects the legs of the right angle members which legs are in close proximity to each other.
10. A hemostatic clip according to claim 9 wherein the resilient member connecting said right angle members is disposed along the length of the legs of the right angle member which legs are in close proximity to each other.
11. An instrument for applying a pair of hemostatic clips to a blood vessel in the body of a human to close said vessel and then severing said vessel in the area between said clips, said instrument comprising a handle portion, a nose portion and a housing connecting said handle portion to said nose portion, said nose portion being hollow and including a horizontal slit, a pair of parallel slits disposed perpendicular to said horizontal slit and transversing said horizontal slit, said perpendicular slits being positioned at the outer edges of the said horizontal slit, said housing containing a pair of deflectable surfaces extending into said horizontal slit, a pair of hemostatic clips, each of said clips comprising a pair of leg members in close proximity to one another, said leg members being connected together at one end thereof by a resilient member and being unconnected at their opposite end, one of said clips being positioned in one of said perpendicular slits and the other of said clips being positioned in the other perpendicular slit, a knife member disposed in said housing, the cutting edge of said knife member being positioned in said nose section between said clips, means for reciprocating said nose section from a rearwardmost position to expose said deflectable surfaces beyond the nose member to accept a vessel to be ligated to a forwardmost position to bring said deflectable surfaces together and position the legs of the clips on the edges of said deflectable surfaces to close said vessel and means for moving said knife member forwardly to sever said closed vessel between said clips.
12. An endoscopic clip applying instrument for applying a clip to body tissue comprising;
a handle portion;
an elongate hollow tubular member extending distally from said handle portion, a pair of diverging members extending from the distal end of said hollow tubular member for accepting body tissue therebetween;
a plurality of clips stored in said hollow tubular member;
reciprocating means disposed at the distal end of said hollow tubular member movable between a first position which brings said diverging members into substantial parallelism and simultaneously advances a pair of clips, one along each longitudinal edge of said parallel members while said body tissue is between said parallel members and a second position which allows said members to diverge while said clip remains on said body tissue.
a handle portion;
an elongate hollow tubular member extending distally from said handle portion, a pair of diverging members extending from the distal end of said hollow tubular member for accepting body tissue therebetween;
a plurality of clips stored in said hollow tubular member;
reciprocating means disposed at the distal end of said hollow tubular member movable between a first position which brings said diverging members into substantial parallelism and simultaneously advances a pair of clips, one along each longitudinal edge of said parallel members while said body tissue is between said parallel members and a second position which allows said members to diverge while said clip remains on said body tissue.
13. An endoscopic clip applying instrument for applying a clip to a vessel to ligate said vessel comprising;
a handle portion;
actuating means disposed in said handle portion;
an elongated hollow tubular portion extending distally from said handle portion;
a pair of diverging surfaces extending from the distal end of said hollow tubular portion for accepting a vessel to be ligated therebetween;
a reciprocal member disposed at the distal end of said hollow tubular portion, said member comprising a pair of spaced apart substantially parallel surfaces;
a plurality of clips in seriatim disposed in said hollow tubular portion;
a first drive means extending from said actuating means to said reciprocal member to move said parallel surfaces over said diverging surfaces and bring said diverging surfaces into substantial parallelism;
a second drive means extending from said actuating means to the proximal clip of said plurality of clips to move said plurality of clips so that the most distal clip is along the longitudinal edge of said diverging surfaces when said diverging surfaces are in substantial parallelism to place said clip on the vessel and ligate the vessel; and means to return said reciprocal member to its original position and remove said parallel surfaces from said diverging surfaces and allow the ligated vessel to be removed from the instrument.
a handle portion;
actuating means disposed in said handle portion;
an elongated hollow tubular portion extending distally from said handle portion;
a pair of diverging surfaces extending from the distal end of said hollow tubular portion for accepting a vessel to be ligated therebetween;
a reciprocal member disposed at the distal end of said hollow tubular portion, said member comprising a pair of spaced apart substantially parallel surfaces;
a plurality of clips in seriatim disposed in said hollow tubular portion;
a first drive means extending from said actuating means to said reciprocal member to move said parallel surfaces over said diverging surfaces and bring said diverging surfaces into substantial parallelism;
a second drive means extending from said actuating means to the proximal clip of said plurality of clips to move said plurality of clips so that the most distal clip is along the longitudinal edge of said diverging surfaces when said diverging surfaces are in substantial parallelism to place said clip on the vessel and ligate the vessel; and means to return said reciprocal member to its original position and remove said parallel surfaces from said diverging surfaces and allow the ligated vessel to be removed from the instrument.
14. An endoscopic clip applying instrument according to claim 13 wherein there is a pair of a plurality of clips in seriatim disposed in said hollow tubular portion one of said pair being in substantial alignment with one longitudinal edge of said diverging surfaces and the other of said pair being in substantial alignment with the other longitudinal edge of said diverging surfaces and said second drive means moves the most distal clip of one of said pair along said one longitudinal edge and the most distal clip of the other of said pair along said other longitudinal edge.
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|---|---|---|---|
| US944,584 | 1992-09-14 | ||
| US07/944,584 US5342373A (en) | 1992-09-14 | 1992-09-14 | Sterile clips and instrument for their placement |
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| CA2105886A1 CA2105886A1 (en) | 1994-03-15 |
| CA2105886C true CA2105886C (en) | 2003-12-30 |
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| CA002105886A Expired - Lifetime CA2105886C (en) | 1992-09-14 | 1993-09-10 | Sterile clips and instrument for their placement |
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| EP (1) | EP0588584B1 (en) |
| JP (4) | JP3529108B2 (en) |
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-
1992
- 1992-09-14 US US07/944,584 patent/US5342373A/en not_active Expired - Lifetime
-
1993
- 1993-08-31 IL IL106852A patent/IL106852A0/en unknown
- 1993-09-09 GR GR930100370A patent/GR930100370A/en unknown
- 1993-09-10 JP JP24847293A patent/JP3529108B2/en not_active Expired - Lifetime
- 1993-09-10 CA CA002105886A patent/CA2105886C/en not_active Expired - Lifetime
- 1993-09-13 DK DK93307203T patent/DK0588584T3/en active
- 1993-09-13 DE DE69330367T patent/DE69330367T2/en not_active Expired - Lifetime
- 1993-09-13 EP EP93307203A patent/EP0588584B1/en not_active Expired - Lifetime
- 1993-09-13 AT AT93307203T patent/ATE202268T1/en active
- 1993-09-13 PT PT93307203T patent/PT588584E/en unknown
- 1993-09-13 ES ES93307203T patent/ES2159517T3/en not_active Expired - Lifetime
- 1993-09-13 AU AU47328/93A patent/AU671291B2/en not_active Expired
- 1993-10-28 US US08/144,926 patent/US5474567A/en not_active Expired - Lifetime
-
1995
- 1995-04-20 US US08/425,964 patent/US5601574A/en not_active Expired - Lifetime
-
2003
- 2003-03-24 JP JP2003080434A patent/JP2003235854A/en active Pending
-
2006
- 2006-05-10 JP JP2006131686A patent/JP4153531B2/en not_active Expired - Lifetime
- 2006-06-09 JP JP2006161359A patent/JP2006297120A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE69330367T2 (en) | 2001-10-18 |
| EP0588584A3 (en) | 1995-03-08 |
| ES2159517T3 (en) | 2001-10-16 |
| EP0588584B1 (en) | 2001-06-20 |
| JP2006297120A (en) | 2006-11-02 |
| JP4153531B2 (en) | 2008-09-24 |
| AU4732893A (en) | 1994-03-24 |
| GR930100370A (en) | 1994-05-31 |
| JP2003235854A (en) | 2003-08-26 |
| JP3529108B2 (en) | 2004-05-24 |
| US5601574A (en) | 1997-02-11 |
| CA2105886A1 (en) | 1994-03-15 |
| US5474567A (en) | 1995-12-12 |
| PT588584E (en) | 2001-09-28 |
| US5342373A (en) | 1994-08-30 |
| DK0588584T3 (en) | 2001-08-27 |
| JPH06189970A (en) | 1994-07-12 |
| AU671291B2 (en) | 1996-08-22 |
| IL106852A0 (en) | 1993-12-08 |
| ATE202268T1 (en) | 2001-07-15 |
| JP2006255434A (en) | 2006-09-28 |
| EP0588584A2 (en) | 1994-03-23 |
| DE69330367D1 (en) | 2001-07-26 |
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Legal Events
| Date | Code | Title | Description |
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| EEER | Examination request |