EP0000041A1 - An intravascular catheter - Google Patents
An intravascular catheter Download PDFInfo
- Publication number
- EP0000041A1 EP0000041A1 EP78100066A EP78100066A EP0000041A1 EP 0000041 A1 EP0000041 A1 EP 0000041A1 EP 78100066 A EP78100066 A EP 78100066A EP 78100066 A EP78100066 A EP 78100066A EP 0000041 A1 EP0000041 A1 EP 0000041A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- passageway
- tube
- hub
- forward end
- needle
- 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.)
- Granted
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
- A61M5/1582—Double lumen needles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
- A61M25/0026—Multi-lumen catheters with stationary elements
- A61M25/003—Multi-lumen catheters with stationary elements characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves
- A61M2025/0031—Multi-lumen catheters with stationary elements characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves characterized by lumina for withdrawing or delivering, i.e. used for extracorporeal circuit treatment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
- A61M25/0026—Multi-lumen catheters with stationary elements
- A61M2025/0039—Multi-lumen catheters with stationary elements characterized by lumina being arranged coaxially
Definitions
- This invention relates to an intravascular catheter useful for extracorporeal blood circulation through an artificial kidney, an artificial lung, or the like.
- a couple of needles are kept inserted respectively to each of the vein and artery of a patient for the suction and recovery of blood through the artificial kidney.
- the patient suffers from pain because two needles are inserted into his blood vessels.
- the life of the shunt serving to connect directly the artery and the vein tends to be shortened.
- a so-called “single needle system” has been proposed in which withdrawing from and returning to the body of the blood are effected by using a single needle.
- the opening-closing of a valve is performed electrically so as to enable the single needle to withdraw and return the blood alternately.
- the alternate operation naturally leads to a longer dialyzing time than for the case of using two needles, because .shortening of the dialyzing time will cause sharp and enlarged fluctuations in the internal pressure of the dialyzing circuit, giving bad influences to the.patient.
- the single needle system necessitates a particular machine for operating the circulation.
- the invention aims at eliminating these drawbacks by providing an intravascular catheter of a double-walled structure.
- the invention as characterized in the claims solves the object of providing an intravascular catheter wherein a single needle need be inserted only.once into a blood vessel of a patient for achieving extracorporea.l blood circulation, thereby alleviating the pain of. the patient.
- the catheter of the invention will enable an effective blood circulation equivalent to the conventional device using two needles. Still further, the catheter of this invention can be operated very easily.
- an intravascular catheter comprises a hub 2, a double-walled tube 3 mounted to the tip portion of the hub 2-and having a tapered tip portion, and a needle 4 removably inserted into the double-walled tube 3.
- the hub 2 which is made of, for example, polycarbonate or polypropylene, is provided with an axial passageway 5 as shown in Figure 2.
- the base end portion of the hub is sealed with a sealing member 6 formed of, for example, synthetic rubber so as to close the axial passageway 5, with the tip end of the axial passageway left open.
- the hub 2 is provided with first and second auxiliary passageways 7 and 8 branched from the axial passageway 5.
- first and second auxiliary tubes 11 and 12 formed of a transparent flexible plastic material and havinq caps 9 and 10 (see Figure 1) removably mounted to the tips thereof are connected to the first and second auxiliary passageways 7 and 8, respectively.
- the hub 2 may be formed by integral molding. Alternatively, it is possible to separate the hub into two sections, one section comprising the first auxiliary passageway 7 and the other section including the second auxiliary passageway 8. Namely, these two sections are molded separately and joinad to each other later. The separate molding method is preferred because the subsequent work of fixing an inner tube 13 to the hub can be facilitated.
- A-double-waited tube 3 consisting of the inner tube 13 and an outer tube is mounted to the forward end portion of the hub 2.
- the base portion of the inner tube 13 is inserted into the axial passageway 5 of the hub to reach: for example, a stepped portion 14 provided between the first and second auxiliary blood passageway 7 and 8, and is bonded to the inner wall of the hub defining axial passageway 5 by using an adhesive or the like.
- the second auxiliary passageway 8 of the hub is allowed to communicate with a central passageway 15 formed in the inner tube 13.
- the base edge of the outer tube 16 is fixed to the forward end of the hub such that a flange 17 formed at the base edge of the outer tube is engaged with a stepped portion 18 of the hub, with a reinforcing member 19 disposed to ensure stable engage-- ment between the flange 17 and the stepped portion 18.
- a reinforcing member 19 disposed to ensure stable engage-- ment between the flange 17 and the stepped portion 18.
- the outer tube 16 completely surrounds that portion of the inner tube 13 which extends from the forward end- of the hub 2 so as to have an annular passageway 20 formed between the outer wall of the inner tube and the inner wall of the outer tube.
- the annular passageway 20 communicates with the first auxiliary passageway 7 of the hub.
- the axial passageway 5 formed in the hub 2 is divided by the presence of the inner tube 13 into two independent passageways communicating respectively with the first and second auxiliary passageways 7 and 8.
- the inner and outer tubes 13 and 16 are bonded to each other at the forward end portions by fusion or the like. Further, the double-walled tube 3 consisting of these tubes 13 and 16 has a tapered tip portion 21. When a needle 4 is inserted through the central passageway formed in the inner tube 13, the shape of beveled tip of the double-walled tube 3 nearly conforms with the shape of the tip of the needle 4, thereby substantially avoiding the formation of a stepped portion therebetween for ease in passage through the skin and vascular wall.
- At least one bore is formed in the tip portion of the outer tube 16 so as to enable the annular passageway to communicate with a blood vessel when the tip portion of the double-walled tube has been inserted into the blood vessel. It is preferred to provide the bores 23, 24 in a manner to communicate with the tip of the annular passageway 20 as shown in Figure 1. Otherwise, the blood introduced into the tip portion of the annular passageway would stagnate, leading to coagulation of the blood.
- a highly flexible plastic material such as TFE (tetrafluoroethylene) resin or FEP (fluorinated ethylene propylene) resin for forming each of.the inner and outer tubes of the double-waited tube 3.
- the needle 4 provided by, for example, a stainless steel tube is removably inserted through the elastic sealing member 6 into the central passageway formed in the inner tube.
- the tip of the needle is sharpened so as to facilitate insertion into a blood vessel
- the base of the needle is provided with a head 25.
- a cap 27 equipped with a water-repelling filter 26 serving to withdraw the air from the needle is mounted to the head 25.
- the needle 4 which is hollow, has been inserted into a blood vessel of the patient, the blood flows into the head 25 of the needle.
- Figure 3 illustrates the use of the intravascular catheter .having the construction described above. Specifically, the sharpened tip of the needle 4 is inserted into a blood vessel 28 and, then, the needle 4 alone is withdrawn'with the tip portions of the inner and outer tubes 13 and 16 kept fully inserted within the blood vessel 28. As described above, the blood flows into the head 25 of the needle soon after the tip of the needle has penetrated the blood vessel 28. Since the head 25 is formed of a transparent material, the blood introduced therein is readily visible, rendering it possible to.confirm that the tip of the needle has been properly inserted into the blood vessel-28.
- the tapered tip portion of the double-walled tube 3 well conforms with the sharpened tip of the needle 4 as described previously.
- This construction is very effective for facilitating the insertion of the tip portion of the double-walled tube into the blood vessel 28.
- the outer diameter of the tip of the double-walled tube is substantially equal to that of the tip of the needle such that the resistance to insertion is negligible, resulting in smooth inserting.
- the puncture made by the needle insertion in the sealing member 6 closes under the elasticity of the sealing material, thereby preventing the blood from leaking to the outside through the sealing member.
- the sealing effect can be enhanced if an auxiliary cap 29 is mounted to the base portion of the hub upon withdrawal of the needle 4.
- the air within the catheter is vented. Namely, the caps 9 and 10 mounted to the first and second auxiliary tubes 11 and 12, which are connected to the first and second auxiliary passageways of-the hub, are removed for the air withdrawing operation. Finally, a blood dialysis circuit 30 is connected to the auxiliary tubes 11 and 12 via connecting means. It is seen that the second auxiliary tube 12 constitutes a part of the passageway of blood flowing into the dialysis circuit 30. On the other hand, the first auxiliary tube 11 constitutes a part of the returning blood passageway. It is important to note that the bores 23, 24 provided at the tip of the outer tube 16 are suitably spaced from a port.31 leading to the center passageway formed in the inner tube 13.
- Figure.3 shows that the double-walled tube inserted into the blood vessel 28 extends in the direction opposite to the flow direction of the blood; however, it is possible to reverse the inserting direction of the double-walled tube.
- the blood circulation should also be reversed, i.e., the blood should be introduced into the catheter from the bores 23, 24, and returned'to the blood vessel 28 through the port 31.
- the intravascular catheter of this invention comprises a double-walled tube provided with two separate blood passageways through which the blood is introduced into an artificial kidney or the like and returned to the patient, respectively.
- the blood-treating circuit outside the body of the patient is rendered operable upon withdrawal of the needle .inserted into a blood vessel of the patient.
- trauma to the patient caused by the insertion of the needle can be markedly alleviated, and the life of the shunt can be increased, as compared with the conventional construction.
- the intravascular catheter of this invention can be used in the blood dialysis system utilizing the conventional catheter comprising two needles.
- the sealing member 6 mounted to the base end portion of the hub should naturally be formed of a highly flexible material.
- Figure 4 shows a flexible sheet 32 mounted to the inner edge of the_sealing member 6.
- the sheet 32 acts as a valve so as to prevent the blood from leaking out through the sealing member 6.
- FIG. 5 shows an embodiment of such a construction wherein only the second auxiliary passageway 8 and the sealing member 6 are omitted. Accordingly, the intravascular catheter shown in Figure 5 comprises a hub 33 having an axial passage 34 opening at ..
- a flexible double-walled tube 3 having an inwardly tapered tip portion 21 and consisting of an inner tube 13 extending into the axial passageway 34 formed in the hub 33 and providing a central passageway 15 and an outer tube 16 disposed coaxially with.the inner tube 13, thereby.forming an annular passageway 22 between the outer wall of the inner tube 13 and the inner wall of the outer tube 16, the base edge of the inner tube being secured at an intermediate inner wall of the axial passageway 34.
- the base edge of the outer tube 16 being fixed to the forward end of the hub 33 so as to enable the - annular passageway 22 to communicate with the auxiliary passageway 7, and the central passageway 15 having an opening at the tapered tip 21 of the double-walled tube 3 and the forward end of the annular passageway 20 communicates with a pair of bores 23, 24 provided in the forward end portion of the outer tube 16, and a needle 4 removably inserted into the central passageway 15 formed in the inner tube 13 such that the tip of the needle 4 extends beyond the tapered tip 21 of the double-walled tube 3.
- the catheter shown in Figure 5 makes use of part of axial passage 5 as the second auxiliary passageway 8. Accordingly, in the employment of this type of catheter, upon withdrawal of the needle from a vascular channel, leaving the tip of the double-walled tube kept within the channel, one end of a blood circulating tube is connected to a recessed end portion 35 of the hub 2, thereby obtaining a blood circulation equivalent to that provided by the intravascular catheter shown in Figure 1. It is also possible to-preliminarily provide the recessed end portion of the hub with-an elastic reseal plug.
Abstract
Description
- This invention relates to an intravascular catheter useful for extracorporeal blood circulation through an artificial kidney, an artificial lung, or the like.
- In a conventional blood dialyzing operation using an artificial kidney, a couple of needles are kept inserted respectively to each of the vein and artery of a patient for the suction and recovery of blood through the artificial kidney. In this case, the patient suffers from pain because two needles are inserted into his blood vessels. In addition, the life of the shunt serving to connect directly the artery and the vein tends to be shortened.
- To overcome the above-noted drawbacks, a so-called "single needle system" has been proposed in which withdrawing from and returning to the body of the blood are effected by using a single needle. In this case, the opening-closing of a valve is performed electrically so as to enable the single needle to withdraw and return the blood alternately. The alternate operation naturally leads to a longer dialyzing time than for the case of using two needles, because .shortening of the dialyzing time will cause sharp and enlarged fluctuations in the internal pressure of the dialyzing circuit, giving bad influences to the.patient. It should also be noted that the single needle system necessitates a particular machine for operating the circulation.
- The invention aims at eliminating these drawbacks by providing an intravascular catheter of a double-walled structure. The invention as characterized in the claims solves the object of providing an intravascular catheter wherein a single needle need be inserted only.once into a blood vessel of a patient for achieving extracorporea.l blood circulation, thereby alleviating the pain of. the patient. Further, the catheter of the invention will enable an effective blood circulation equivalent to the conventional device using two needles. Still further, the catheter of this invention can be operated very easily.
- Below, the invention is explained in greater detail by referring to the drawings illustrating preferred embodiments, and wherein:
- Figure 1 is a longitudinal sectional view of an intravascular catheter according to one embodiment of this invention;
- Figure 2 is a longitudinal sectional view of the. hub included in the catheter of Figure.1;
- Figure 3 is a view with parts broken away and in section of a vascular channel with catheter embodying the invention.being inserted therein;
- Figure 4 is a longitudinal sectional view showing a modification of a sealing member to be mounted to the base portion of the hub; and
- Figure 5 is a longitudinal sectional view of an intravascular catheter according to another embodiment of this invention.
- As shown in Figure 1, an intravascular catheter according to one embodiment of this invention comprises a
hub 2, a double-walled tube 3 mounted to the tip portion of the hub 2-and having a tapered tip portion, and aneedle 4 removably inserted into the double-walled tube 3. Thehub 2, which is made of, for example, polycarbonate or polypropylene, is provided with anaxial passageway 5 as shown in Figure 2. The base end portion of the hub is sealed with a sealingmember 6 formed of, for example, synthetic rubber so as to close theaxial passageway 5, with the tip end of the axial passageway left open. Further, thehub 2 is provided with first and secondauxiliary passageways axial passageway 5. In general, first and secondauxiliary tubes havinq caps 9 and 10 (see Figure 1) removably mounted to the tips thereof are connected to the first and secondauxiliary passageways - The
hub 2 may be formed by integral molding. Alternatively, it is possible to separate the hub into two sections, one section comprising the firstauxiliary passageway 7 and the other section including the secondauxiliary passageway 8. Namely, these two sections are molded separately and joinad to each other later. The separate molding method is preferred because the subsequent work of fixing aninner tube 13 to the hub can be facilitated. - A-double-waited
tube 3 consisting of theinner tube 13 and an outer tube is mounted to the forward end portion of thehub 2. Specifically, the base portion of theinner tube 13 is inserted into theaxial passageway 5 of the hub to reach: for example, astepped portion 14 provided between the first and secondauxiliary blood passageway axial passageway 5 by using an adhesive or the like. Thus, the secondauxiliary passageway 8 of the hub is allowed to communicate with acentral passageway 15 formed in theinner tube 13. On the other hand, the base edge of theouter tube 16 is fixed to the forward end of the hub such that aflange 17 formed at the base edge of the outer tube is engaged with astepped portion 18 of the hub, with a reinforcingmember 19 disposed to ensure stable engage-- ment between theflange 17 and thestepped portion 18. Naturally, the particular construction mentioned permits a sufficiently strong fixing of the outer tube to the hub. - The
outer tube 16 completely surrounds that portion of theinner tube 13 which extends from the forward end- of thehub 2 so as to have anannular passageway 20 formed between the outer wall of the inner tube and the inner wall of the outer tube. As shown in the drawing, theannular passageway 20 communicates with the firstauxiliary passageway 7 of the hub. In other words, theaxial passageway 5 formed in thehub 2 is divided by the presence of theinner tube 13 into two independent passageways communicating respectively with the first and secondauxiliary passageways - The inner and
outer tubes walled tube 3 consisting of thesetubes tapered tip portion 21. When aneedle 4 is inserted through the central passageway formed in theinner tube 13, the shape of beveled tip of the double-walled tube 3 nearly conforms with the shape of the tip of theneedle 4, thereby substantially avoiding the formation of a stepped portion therebetween for ease in passage through the skin and vascular wall. - At least one bore, for example, a pair of mutually facing
bores outer tube 16 so as to enable the annular passageway to communicate with a blood vessel when the tip portion of the double-walled tube has been inserted into the blood vessel. It is preferred to provide thebores annular passageway 20 as shown in Figure 1. Otherwise, the blood introduced into the tip portion of the annular passageway would stagnate, leading to coagulation of the blood. - Incidentally, it is preferred to use a highly flexible plastic material such as TFE (tetrafluoroethylene) resin or FEP (fluorinated ethylene propylene) resin for forming each of.the inner and outer tubes of the double-waited
tube 3. - The
needle 4 provided by, for example, a stainless steel tube is removably inserted through theelastic sealing member 6 into the central passageway formed in the inner tube. As shown in Figure 1, the tip of the needle is sharpened so as to facilitate insertion into a blood vessel, and the base of the needle is provided with ahead 25. Further, acap 27 equipped with a water-repellingfilter 26 serving to withdraw the air from the needle is mounted to thehead 25. When theneedle 4, which is hollow, has been inserted into a blood vessel of the patient, the blood flows into thehead 25 of the needle. Thus, it is preferred to use a transparent material for forming each of thehead 25 and thecap 27, so that blood flow introduced into the head can be observed through the transparent material, rendering it possible to confirm the insertion of the tip of the needle into a blood vessel. - Figure 3 illustrates the use of the intravascular catheter .having the construction described above. Specifically, the sharpened tip of the
needle 4 is inserted into ablood vessel 28 and, then, theneedle 4 alone is withdrawn'with the tip portions of the inner andouter tubes blood vessel 28. As described above, the blood flows into thehead 25 of the needle soon after the tip of the needle has penetrated theblood vessel 28. Since thehead 25 is formed of a transparent material, the blood introduced therein is readily visible, rendering it possible to.confirm that the tip of the needle has been properly inserted into the blood vessel-28. - It should be noted that-the tapered tip portion of the double-walled
tube 3 well conforms with the sharpened tip of theneedle 4 as described previously. This construction is very effective for facilitating the insertion of the tip portion of the double-walled tube into theblood vessel 28. Specifically, the outer diameter of the tip of the double-walled tube is substantially equal to that of the tip of the needle such that the resistance to insertion is negligible, resulting in smooth inserting. - As soon as the
needle 4 has been withdrawn, the puncture made by the needle insertion in the sealingmember 6 closes under the elasticity of the sealing material, thereby preventing the blood from leaking to the outside through the sealing member. The sealing effect can be enhanced if anauxiliary cap 29 is mounted to the base portion of the hub upon withdrawal of theneedle 4. - After the intravascular catheter has been set as shown. in Figure 3, the air within the catheter is vented. Namely, the
caps auxiliary tubes blood dialysis circuit 30 is connected to theauxiliary tubes auxiliary tube 12 constitutes a part of the passageway of blood flowing into thedialysis circuit 30. On the other hand, the firstauxiliary tube 11 constitutes a part of the returning blood passageway. It is important to note that thebores outer tube 16 are suitably spaced from a port.31 leading to the center passageway formed in theinner tube 13. It follows that the blood returned to the blood vessel through thebores dialysis circuit 30 through theport 31, as shown in.Figure 3. Incidentally, Figure.3 shows that the double-walled tube inserted into theblood vessel 28 extends in the direction opposite to the flow direction of the blood; however, it is possible to reverse the inserting direction of the double-walled tube. - In the latter case, the blood circulation should also be reversed, i.e., the blood should be introduced into the catheter from the
bores blood vessel 28 through theport 31. - As described in detail, the intravascular catheter of this invention comprises a double-walled tube provided with two separate blood passageways through which the blood is introduced into an artificial kidney or the like and returned to the patient, respectively. It is important to note that the blood-treating circuit outside the body of the patient is rendered operable upon withdrawal of the needle .inserted into a blood vessel of the patient. In other words, it suffices to insert the needle into a blood vessel only once for rendering the catheter of this invention operable. Naturally, trauma to the patient caused by the insertion of the needle can be markedly alleviated, and the life of the shunt can be increased, as compared with the conventional construction. Further, the intravascular catheter of this invention can be used in the blood dialysis system utilizing the conventional catheter comprising two needles.
- The sealing
member 6 mounted to the base end portion of the hub should naturally be formed of a highly flexible material. For enhancing the sealing effect, however, it is possible to employ various valve mechanisms. For example, Figure 4 shows aflexible sheet 32 mounted to the inner edge ofthe_sealing member 6. Naturally, thesheet 32 acts as a valve so as to prevent the blood from leaking out through the sealingmember 6. - Although the foregoing has been primarily described with respect to an intravascular catheter having a pair of auxiliary passages branched from the axial passage of the hub, it is also possible to omit the second
auxiliary passageway 8 and to utilize the axial passage per se as the second auxiliary passage. Figure 5 shows an embodiment of such a construction wherein only the secondauxiliary passageway 8 and the sealingmember 6 are omitted. Accordingly, the intravascular catheter shown in Figure 5 comprises a hub 33 having anaxial passage 34 opening at .. both ends, anauxiliary passageway 7 branched from theaxial passageway 34, a flexible double-walled tube 3 having an inwardly taperedtip portion 21 and consisting of aninner tube 13 extending into theaxial passageway 34 formed in the hub 33 and providing acentral passageway 15 and anouter tube 16 disposed coaxially with.theinner tube 13, thereby.forming an annular passageway 22 between the outer wall of theinner tube 13 and the inner wall of theouter tube 16, the base edge of the inner tube being secured at an intermediate inner wall of theaxial passageway 34. between theauxiliary passageway 7 and the forward end of theaxial passage 34, the base edge of theouter tube 16 being fixed to the forward end of the hub 33 so as to enable the - annular passageway 22 to communicate with theauxiliary passageway 7, and thecentral passageway 15 having an opening at the taperedtip 21 of the double-walled tube 3 and the forward end of theannular passageway 20 communicates with a pair ofbores outer tube 16, and aneedle 4 removably inserted into thecentral passageway 15 formed in theinner tube 13 such that the tip of theneedle 4 extends beyond the taperedtip 21 of the double-walled tube 3. - As described above, the catheter shown in Figure 5 makes use of part of
axial passage 5 as the secondauxiliary passageway 8. Accordingly, in the employment of this type of catheter, upon withdrawal of the needle from a vascular channel, leaving the tip of the double-walled tube kept within the channel, one end of a blood circulating tube is connected to a recessedend portion 35 of thehub 2, thereby obtaining a blood circulation equivalent to that provided by the intravascular catheter shown in Figure 1. It is also possible to-preliminarily provide the recessed end portion of the hub with-an elastic reseal plug.
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP72314/77U | 1977-06-03 | ||
JP1977072314U JPS5740997Y2 (en) | 1977-06-03 | 1977-06-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0000041A1 true EP0000041A1 (en) | 1978-12-20 |
EP0000041B1 EP0000041B1 (en) | 1981-04-29 |
Family
ID=13485681
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP78100066A Expired EP0000041B1 (en) | 1977-06-03 | 1978-06-01 | An intravascular catheter |
Country Status (6)
Country | Link |
---|---|
US (1) | US4217895A (en) |
EP (1) | EP0000041B1 (en) |
JP (1) | JPS5740997Y2 (en) |
AU (1) | AU518685B2 (en) |
CA (1) | CA1125616A (en) |
DE (1) | DE2860634D1 (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2449453A1 (en) * | 1979-02-20 | 1980-09-19 | Terumo Corp | INTRAVASCULAR CATHETER ASSEMBLY |
EP0025704A1 (en) * | 1979-09-17 | 1981-03-25 | Sorenson Research Co. Inc. | A double lumen cannula |
FR2485377A1 (en) * | 1980-06-10 | 1981-12-31 | Wallace Ltd Hg | IMPROVEMENT IN INTRAVASCULAR APPARATUS TO REMOVE THE INTRODUCTION AREA OF POLLUTED BEDDING DRUGS |
EP0093887A1 (en) * | 1982-04-20 | 1983-11-16 | Karl Dr. Aigner | Perfusion catheter |
US4493696A (en) * | 1979-12-28 | 1985-01-15 | Allentyne Limited | Hemodialysis cannular for subclavian insertion |
EP0251027A2 (en) * | 1986-06-21 | 1988-01-07 | Günter Prof. Dr. Rau | Means for measuring the partial pressure of gases and gas mixtures dissolved in a fluid |
GB2211422A (en) * | 1987-12-17 | 1989-07-05 | Anderson Mark Leroy | Trocar assembly for draining fluids from a body. |
WO1989010157A1 (en) * | 1988-04-21 | 1989-11-02 | Therex Corporation | Dual access infusion and monitoring system |
EP0465458A1 (en) * | 1990-07-04 | 1992-01-08 | AVL Medical Instruments AG | Dual lumen needle for withdrawal of body fluids |
WO1992002270A1 (en) * | 1990-07-30 | 1992-02-20 | Avl Medical Instruments Ag | Dyalysis probe |
US6592544B1 (en) | 1999-11-24 | 2003-07-15 | Edwards Lifesciences Corporation | Vascular access devices having hemostatic safety valve |
US6827710B1 (en) | 1996-11-26 | 2004-12-07 | Edwards Lifesciences Corporation | Multiple lumen access device |
WO2005035022A2 (en) | 2003-10-08 | 2005-04-21 | Medical Components, Inc. | Co-axial tapered catheter |
Families Citing this family (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54295Y2 (en) * | 1976-11-24 | 1979-01-09 | ||
DE3112762A1 (en) * | 1981-03-31 | 1983-01-13 | Jürgen Dr.med. 8700 Würzburg Schrezenmeir | Double-lumen blood sampling, single-lumen infusion, subclavian catheter set |
JPS57188263A (en) * | 1981-05-15 | 1982-11-19 | Terumo Corp | Cathetel held in blood vessel |
US4692141A (en) * | 1982-03-08 | 1987-09-08 | Mahurkar Sakharam D | Double lumen catheter |
US4531937A (en) * | 1983-01-24 | 1985-07-30 | Pacesetter Systems, Inc. | Introducer catheter apparatus and method of use |
JPS59161808U (en) * | 1983-02-10 | 1984-10-30 | 株式会社日本メディカル・サプライ | aortic cannula |
US4710175A (en) * | 1983-08-19 | 1987-12-01 | Deseret Medical, Inc. | Intravenous infusion assembly formed as an integral part |
US5197951A (en) * | 1983-12-14 | 1993-03-30 | Mahurkar Sakharam D | Simple double lumen catheter |
US4770652A (en) * | 1985-02-12 | 1988-09-13 | Mahurkar Sakharam D | Method and apparatus for using dual-lumen catheters for extracorporeal treatment |
US4817624A (en) * | 1985-12-20 | 1989-04-04 | The General Hospital Corporation | Mini-bolus technique for thermodilution cardiac output measurements |
US4808155A (en) * | 1986-02-27 | 1989-02-28 | Mahurkar Sakharam D | Simple double lumen catheter |
JPH0636825Y2 (en) * | 1986-03-26 | 1994-09-28 | 川澄化学工業株式会社 | Blood guide needle |
CA1330285C (en) * | 1987-12-22 | 1994-06-21 | Geoffrey S. Martin | Triple lumen catheter |
US4931049A (en) * | 1988-07-05 | 1990-06-05 | Camino Laboratorties, Inc. | Catheter coupling system |
US5374245A (en) * | 1990-01-10 | 1994-12-20 | Mahurkar; Sakharam D. | Reinforced multiple-lumen catheter and apparatus and method for making the same |
US5221255A (en) * | 1990-01-10 | 1993-06-22 | Mahurkar Sakharam D | Reinforced multiple lumen catheter |
US5053004A (en) * | 1990-08-24 | 1991-10-01 | Medical Components, Inc. | Catheter having two coaxial lumens |
CA2052300A1 (en) * | 1991-09-26 | 1993-03-27 | Med-Pro Design, Inc. | Co-axial catheter |
US5221256A (en) * | 1992-02-10 | 1993-06-22 | Mahurkar Sakharam D | Multiple-lumen catheter |
US5403291A (en) * | 1993-08-02 | 1995-04-04 | Quinton Instrument Company | Catheter with elongated side holes |
US5348536A (en) * | 1993-08-02 | 1994-09-20 | Quinton Instrument Company | Coextruded catheter and method of forming |
US5486159A (en) * | 1993-10-01 | 1996-01-23 | Mahurkar; Sakharam D. | Multiple-lumen catheter |
US5556390A (en) * | 1995-03-07 | 1996-09-17 | Quinton Instrument Company | Catheter with oval or elliptical lumens |
US6991614B2 (en) | 1995-11-07 | 2006-01-31 | Boston Scientific Scimed, Inc. | Ureteral stent for improved patient comfort |
US6676623B2 (en) | 2001-05-04 | 2004-01-13 | Scimed Life Systems, Inc. | Drainage devices and methods |
US6849069B1 (en) | 1995-11-07 | 2005-02-01 | Boston Scientitfic Corporation | Medical device with tail(s) for assisting flow of urine |
WO1999042156A1 (en) | 1998-02-24 | 1999-08-26 | Boston Scientific Limited | High flow rate dialysis catheters and related methods |
US6332892B1 (en) | 1999-03-02 | 2001-12-25 | Scimed Life Systems, Inc. | Medical device with one or more helical coils |
DE10008825C2 (en) * | 2000-02-25 | 2002-11-21 | Disetronic Licensing Ag | micro perfusion |
US6719804B2 (en) | 2001-04-02 | 2004-04-13 | Scimed Life Systems, Inc. | Medical stent and related methods |
US6620202B2 (en) | 2001-10-16 | 2003-09-16 | Scimed Life Systems, Inc. | Medical stent with variable coil and related methods |
GB0125577D0 (en) * | 2001-10-25 | 2001-12-19 | Smiths Group Plc | Medico-surgical instruments |
US20040006302A1 (en) * | 2002-01-25 | 2004-01-08 | Hassan Chaouk | Coaxial delivery device |
KR20040007850A (en) * | 2002-07-11 | 2004-01-28 | 정현수 | Needle socket for a blood vessel injection |
EP2001542B1 (en) | 2006-03-31 | 2010-02-10 | C.R.Bard, Inc. | Catheter including arcuate transition region |
JP5528519B2 (en) | 2012-09-28 | 2014-06-25 | 日機装株式会社 | Indwelling needle for extracorporeal circulation |
US10252023B2 (en) | 2013-01-11 | 2019-04-09 | C. R. Bard, Inc. | Curved catheter and methods for making same |
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JP2016067455A (en) * | 2014-09-29 | 2016-05-09 | 日機装株式会社 | Extracorporeal circulation indwelling needle |
US10835688B2 (en) * | 2017-08-01 | 2020-11-17 | Tejash Patel | Enhanced needle |
US11759611B2 (en) | 2021-08-09 | 2023-09-19 | Evolve Medicus, Inc. | Integrated catheter assembly |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2645520A1 (en) * | 1975-10-08 | 1977-04-14 | William F Mclaughlin | DEVICE FOR POINTING BODY BARRELS |
BE851299A (en) * | 1976-02-11 | 1977-05-31 | Hospal S A | CATHETER |
DE2613281A1 (en) * | 1976-03-29 | 1977-10-06 | Tersteegen Bernd | DOUBLE LUMEN CATHETER |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US390177A (en) * | 1888-09-25 | ellwood lee | ||
US3399674A (en) * | 1965-07-01 | 1968-09-03 | Voys Inc Le | Catheter placement unit |
US3699961A (en) * | 1970-03-12 | 1972-10-24 | Sebon Corp The | Syringe and method |
US3833003A (en) * | 1972-07-05 | 1974-09-03 | A Taricco | Intravascular occluding catheter |
FR2220729B1 (en) * | 1973-03-06 | 1975-10-31 | Technological Supply | |
US3851646A (en) * | 1973-04-13 | 1974-12-03 | Sarns Inc | Connector for open heart surgery |
US4016879A (en) * | 1973-08-22 | 1977-04-12 | Dynasciences Corporation | Multi-mode cannulating apparatus |
US4099528A (en) * | 1977-02-17 | 1978-07-11 | Sorenson Research Co., Inc. | Double lumen cannula |
-
1977
- 1977-06-03 JP JP1977072314U patent/JPS5740997Y2/ja not_active Expired
-
1978
- 1978-05-26 US US05/909,721 patent/US4217895A/en not_active Expired - Lifetime
- 1978-05-30 AU AU36613/78A patent/AU518685B2/en not_active Expired
- 1978-06-01 DE DE7878100066T patent/DE2860634D1/en not_active Expired
- 1978-06-01 CA CA304,620A patent/CA1125616A/en not_active Expired
- 1978-06-01 EP EP78100066A patent/EP0000041B1/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2645520A1 (en) * | 1975-10-08 | 1977-04-14 | William F Mclaughlin | DEVICE FOR POINTING BODY BARRELS |
BE851299A (en) * | 1976-02-11 | 1977-05-31 | Hospal S A | CATHETER |
DE2613281A1 (en) * | 1976-03-29 | 1977-10-06 | Tersteegen Bernd | DOUBLE LUMEN CATHETER |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2449453A1 (en) * | 1979-02-20 | 1980-09-19 | Terumo Corp | INTRAVASCULAR CATHETER ASSEMBLY |
EP0025704A1 (en) * | 1979-09-17 | 1981-03-25 | Sorenson Research Co. Inc. | A double lumen cannula |
US4493696A (en) * | 1979-12-28 | 1985-01-15 | Allentyne Limited | Hemodialysis cannular for subclavian insertion |
FR2485377A1 (en) * | 1980-06-10 | 1981-12-31 | Wallace Ltd Hg | IMPROVEMENT IN INTRAVASCULAR APPARATUS TO REMOVE THE INTRODUCTION AREA OF POLLUTED BEDDING DRUGS |
NL8102765A (en) * | 1980-06-10 | 1982-01-04 | Wallace Ltd H G | INTRAVASCULAR DEVICE. |
EP0093887A1 (en) * | 1982-04-20 | 1983-11-16 | Karl Dr. Aigner | Perfusion catheter |
EP0251027B1 (en) * | 1986-06-21 | 1993-01-27 | Günter Prof. Dr. Rau | Means for measuring the partial pressure of gases and gas mixtures dissolved in a fluid |
EP0251027A2 (en) * | 1986-06-21 | 1988-01-07 | Günter Prof. Dr. Rau | Means for measuring the partial pressure of gases and gas mixtures dissolved in a fluid |
GB2211422A (en) * | 1987-12-17 | 1989-07-05 | Anderson Mark Leroy | Trocar assembly for draining fluids from a body. |
WO1989010157A1 (en) * | 1988-04-21 | 1989-11-02 | Therex Corporation | Dual access infusion and monitoring system |
US4955861A (en) * | 1988-04-21 | 1990-09-11 | Therex Corp. | Dual access infusion and monitoring system |
EP0465458A1 (en) * | 1990-07-04 | 1992-01-08 | AVL Medical Instruments AG | Dual lumen needle for withdrawal of body fluids |
AT397911B (en) * | 1990-07-04 | 1994-08-25 | Avl Verbrennungskraft Messtech | TWO TUMBLE NEEDLE FOR BODY LIQUIDS |
EP0623356A1 (en) * | 1990-07-04 | 1994-11-09 | AVL Medical Instruments AG | Dual lumen needle for withdrawal of body fluids |
WO1992002270A1 (en) * | 1990-07-30 | 1992-02-20 | Avl Medical Instruments Ag | Dyalysis probe |
US6827710B1 (en) | 1996-11-26 | 2004-12-07 | Edwards Lifesciences Corporation | Multiple lumen access device |
US6592544B1 (en) | 1999-11-24 | 2003-07-15 | Edwards Lifesciences Corporation | Vascular access devices having hemostatic safety valve |
WO2005035022A2 (en) | 2003-10-08 | 2005-04-21 | Medical Components, Inc. | Co-axial tapered catheter |
EP1670523A2 (en) * | 2003-10-08 | 2006-06-21 | Medical Components, Inc. | Co-axial tapered catheter |
EP1670523A4 (en) * | 2003-10-08 | 2007-10-03 | Medical Components Inc | Co-axial tapered catheter |
US8226633B2 (en) | 2003-10-08 | 2012-07-24 | Medical Components, Inc. | Method of making a co-axial catheter |
US8241245B2 (en) | 2003-10-08 | 2012-08-14 | Medical Components, Inc. | Co-axial catheter |
Also Published As
Publication number | Publication date |
---|---|
US4217895A (en) | 1980-08-19 |
JPS5740997Y2 (en) | 1982-09-08 |
DE2860634D1 (en) | 1981-08-06 |
EP0000041B1 (en) | 1981-04-29 |
AU518685B2 (en) | 1981-10-15 |
JPS54295U (en) | 1979-01-05 |
CA1125616A (en) | 1982-06-15 |
AU3661378A (en) | 1979-12-06 |
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