CN101999919B - Circular tube type binding instrument - Google Patents
Circular tube type binding instrument Download PDFInfo
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- CN101999919B CN101999919B CN 201010593197 CN201010593197A CN101999919B CN 101999919 B CN101999919 B CN 101999919B CN 201010593197 CN201010593197 CN 201010593197 CN 201010593197 A CN201010593197 A CN 201010593197A CN 101999919 B CN101999919 B CN 101999919B
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- space
- cutting knife
- annular cutting
- nail
- ejector pin
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Abstract
The invention discloses a circular tube type binding instrument which comprises an instrument body nail cylinder and a nail pushing seat, wherein the nail pushing seat comprises a connecting part connected with an instrument body and an outwards expanding part arranged at the far end of the connecting part, the outer diameter of the outward expanding part is adaptive to the inner diameter of the nail cylinder, the far end of the outward expanding part is provided with a circle of nail pushing sheets, an annular cutter is arranged at the inner side of the nail pushing sheets, the inner cavity of the annular cutter forms a first space for accommodating tissues, the annular cutter is arranged on a nail pushing seat through a bearing structure, a second space special for accommodating the tissues is formed below the bottom surface of the annular cutter, the second space is formed by a center space of the bearing structure and an internal space of an outwards expanding part of the nail pushing seat, and the second space is a peripheral communication space. The invention has the advantages of effectively enlarging the volume of the tissue accommodating spaces, and increasing the safety of an apparatus in a thick tissue stitching operation.
Description
Technical field
The present invention relates to the tubular binding strument that a kind of surgical operation is used, belong to technical field of medical instruments.
Background technology
Tubular binding strument is the surgical instruments that is widely used in surgery reconstruction of digestive tract, nail-head component part by circle forms with the percussion assembly, the tissue that two sections needs are coupled together is placed between the nail anvil and nail bin of nail-head component, adjust nail anvil and nail bin position and make it close and grip tissue, then pull the trigger the assembly percussion nail is shaped, finish the connection of two sections tissues.
US Patent No. 5205459 has been put down in writing a kind of tubular binding strument, and it comprises an annular cutting knife, and the ejector pin seat that is fixedly connected with this annular cutting knife, and the inner chamber of annular cutting knife is for organizing spatial accommodation.Chinese patent 200510038253.9 and 200710132025.7 has been put down in writing a kind of tubular binding strument with rotary cutter, and it comprises that cutting knife, cutting knife are connected on the ejector pin seat by rotating mechanism, and same, the inner chamber of endless knife is for organizing spatial accommodation.
Some operations, for example the seaming and cutting of the thick tissue of digestive tract operation or knot operation on rectum are had relatively high expectations to the spatial accommodation of organizing of apparatus, if organize the volume of spatial accommodation inadequate, then tissue can be excessive from this spatial accommodation, thereby can cause following closely cacoplastic serious consequence.
The method that enlarges at present the volume of organizing spatial accommodation mainly adopts the diameter that increases annular cutting knife, but this method must cause the external diameter of apparatus to increase, and has increased the difficulty that apparatus enters operative region, so be not a good solution.Also have in addition some increases to organize the method for the volume of spatial accommodation, be specially perforate on the wall of annular cutting knife, make perforate extend through the apparatus outer wall always, when being organized in when being subject to larger pressure, can be mobile in the perforate on the annular cutting knife wall, this method can be alleviated the pressure of the volume deficiency of organizing spatial accommodation to a certain extent, but this method is inapplicable for rotatable annular cutting knife, because the tissue that enters in the annular cutting knife perforate can extend to the apparatus outer wall always, and then can limit annular cutting knife with respect to the rotation of pushing slice of nail, cause annular cutting knife can't finish cutting action, cause the failure of operation.
Summary of the invention
Defective in view of above-mentioned prior art exists the objective of the invention is to propose a kind of larger tubular binding strument of volume of organizing spatial accommodation.
Purpose of the present invention will be achieved by the following technical programs:
A kind of tubular binding strument, comprise instrument body and be arranged on the nail barrel of body distal end, the ejector pin seat, described nail barrel is used for holding fully the ejector pin seat, described ejector pin seat comprises the connecting portion that is connected with instrument body and is located at the expanding part of described connecting portion far-end, the external diameter of described expanding part and the internal diameter of nail barrel adapt, the far-end of described expanding part is provided with a circle pushing slice of nail, one annular cutting knife is arranged on the inboard of described pushing slice of nail, the inner chamber of described annular cutting knife forms the first space that holds tissue, described annular cutting knife is arranged on the described ejector pin seat by bearing arrangement, also form one below the described annular cutting knife bottom surface and be specifically designed to the second space that holds tissue, described second space is by the central space of bearing arrangement, the inner space of the expanding part of ejector pin seat forms, and described second space is a circumferential UNICOM space.Described the first space and the mutual UNICOM of second space.
Further, the maximum inner diameter of the internal diameter of described annular cutting knife, bearing arrangement and expanding part is suitable.
Further, described bearing arrangement comprises all L-shaped bearing inner race and bearing outer ring, and both are fastened mutually.
Further, be provided with the pad of an annular between described bearing arrangement and the ejector pin seat.
Further, the internal diameter of described pad equals the internal diameter of described bearing inner race.
Further, described annular cutting knife is fixed on the described bearing inner race by trip bolt, and the end face of described bearing inner race is close in the bottom surface of described annular cutting knife, and described bearing outer ring and ejector pin seat, pushing slice of nail fix.
Further, the bottom symmetry of described annular cutting knife has two protuberances, and endless knife bottom is divided into the semilune space of two symmetries, described bearing inner race is arranged with the boss of two symmetries, the upper surface of described boss is fixedly connected on the corresponding protuberance of endless knife bottom, and the boss of described bearing inner race is divided into the central space of bearing in the semilune space of two symmetries.
Compared with prior art, beneficial effect of the present invention is mainly reflected in: effectively enlarged the volume of organizing spatial accommodation, increased apparatus in the thick safety of organizing in the seaming and cutting operation, and no matter whether annular cutting knife rotates all can use, increased the scope of using.
Description of drawings
Fig. 1 is the schematic perspective view of the part of tubular binding strument of the present invention;
Fig. 2 is the exploded perspective view of the tubular binding strument shown in Fig. 1;
Fig. 3 is the cutaway view of the tubular binding strument shown in Fig. 1;
Wherein:
1 ejector pin seat, 11 connecting portions, 12 expanding parts
2 pushing slice of nail, 3 annular cutting knife 31 protuberances
32 semilune spaces, 4 bearing outer rings, 5 bearing inner races
51 boss, 52 semilune spaces, 6 trip bolts
7 pads
The specific embodiment
The present invention has disclosed a kind of tubular binding strument, as Figure 1-3, comprises the instrument body (not shown) and is arranged on nail barrel and the ejector pin seat 1 of body distal end.Consistent with prior art, described ejector pin seat is contained in the described nail barrel fully, and namely the circumferential surface of described ejector pin seat is surrounded by nail barrel fully.This is to organize the outer peripheral face by nail barrel to enter into the ejector pin seat in order to prevent, perhaps in order to prevent that tissue is discharged to outside the nail barrel by the ejector pin seat, reduces and organizes contaminated chance.
Described ejector pin seat 1 comprises the connecting portion 11 that is connected with instrument body and the expanding part 12 of being located at described connecting portion 11 far-ends, and interior without leave near the arriving far gradually of described expanding part 12 increases.Near-end herein, far-end are to decide according to industry practice, when namely performing the operation close to the doctor person be near-end, be on the contrary far-end.
The far-end of the expanding part 12 of described ejector pin seat 1 vertically is provided with the inboard that a circle pushing slice of nail 2, one annular cutting knifes 3 are arranged on described pushing slice of nail 2.Described annular cutting knife 3 is arranged on the described ejector pin seat 1 by bearing arrangement, and concrete described bearing arrangement comprises all L-shaped bearing inner race 5 and bearing outer ring 4 such as Fig. 2, shown in Figure 3, and both are fastened mutually.The bottom symmetry of described annular cutting knife has two protuberances 31, and endless knife bottom is divided into the semilune space 32 of two symmetries, described bearing inner race 5 is arranged with the boss 51 of two symmetries, the end face of described boss 51 is fixedly connected on the corresponding protuberance 31 of endless knife bottom, and the boss 51 of described bearing inner race 5 is divided into the central space of bearing in the semilune space 52 of two symmetries.The inboard of described boss is connected in the only spiral path of tube outer surface, is used for revolving the cutter effect.In this preferred embodiment, annular cutting knife can rotate by bearing arrangement is relative with pushing slice of nail, and produces the cutter effect of revolving, but owing to be not emphasis of the present invention, so rotary drive mechanism is not done concrete introduction at this.
Described annular cutting knife 3 is fixed on the described bearing inner race 5 by trip bolt 6, and the end face of described bearing inner race 5 is close in the bottom surface of described annular cutting knife 3, and described bearing outer ring 4 fixes with ejector pin seat 1, pushing slice of nail 2.In this preferred embodiment, also be provided with the pad 7 of an annular between described bearing arrangement and the ejector pin seat 1, acting on of this pad 7 stops the material of melting to enter bearing arrangement when being connected with the injection moulding of ejector pin seat, thereby affects the performance of bearing arrangement.
Among the present invention, the internal diameter of the internal diameter of described annular cutting knife 3, bearing arrangement (and internal diameter of bearing inner race 5), pad 7 and the maximum inner diameter of expanding part 12 are about equally, like this, as shown in Figure 3, the inner space UNICOM of the expanding part 12 of the central space of the inner space of described annular cutting knife 3, bearing inner race 5, ejector pin seat and form and be exclusively used in the space M that accommodates tissue.This space M can be divided into two parts in view of structure, the first space that the inner chamber of the annular cutting knife 3 the same with prior art forms, the following second space that forms in described annular cutting knife 3 bottom surfaces, described second space is formed by the inner space of the expanding part of the central space of bearing arrangement (being bearing inner race 5), ejector pin seat, and described second space is a circumferential UNICOM space, and with described the first space UNICOM.
Because the bottom surface of the annular cutting knife 3 in this preferred embodiment is provided with a bearing arrangement that can make its relative ejector pin seat 1 rotation, and the inner ring boss of this bearing need inwardly stretch out and cooperate with the tube of ending of nail barrel, so in this preferred embodiment, two semilune spaces 32 that the protuberance 31 of annular cutting knife 3 forms, and two semilune spaces 52 of boss 51 formation of bearing inner race 5, can consist of to greatest extent second space of the present invention.
And the second space of this preferred embodiment is a circumferential UNICOM space, and this also is in order to obtain to greatest extent second space.Like this, the receiving space M that is formed through by the first space and second space then can be used as the space that holds tissue, organizes spatial accommodation (namely only for the first space of the present invention) much bigger than prior art.And after tissue is positioned at this space, can not have influence on the motion separately of annular cutting knife and pushing slice of nail, and namely whether rotate regardless of annular cutting knife, can adopt structure of the present invention.
The below simply introduces the installation process of this preferred embodiment.
At first annular gasket 7, bearing outer ring 4 are fastened on the bearing inner race 5, then put into together the injection mold of ejector pin seat, injection moulding forms the ejector pin holder assembly.The inwall of bearing inner race 5 is given prominence to two boss, and 1 fixing hole is arranged on each boss, and annular cutting knife 3 usefulness trip bolts 6 are fixed in the fixing hole of bearing inner race 5.Other parts of apparatus are installed one by one in order, and apparatus is namely assembled and is finished.
The present invention still has numerous embodiments, and all employing equivalents or equivalent transformation and all technical schemes of forming all drop within protection scope of the present invention.
Claims (7)
1. tubular binding strument, comprise instrument body and be arranged on the nail barrel of body distal end, ejector pin seat (1), described nail barrel is used for holding fully the ejector pin seat, described ejector pin seat (1) comprises the connecting portion (11) that is connected with instrument body and is located at the expanding part (12) of described connecting portion (11) far-end, the external diameter of described expanding part (12) and the internal diameter of nail barrel adapt, the far-end of described expanding part (12) is provided with a circle pushing slice of nail (2), one annular cutting knife (3) is arranged on the inboard of described pushing slice of nail (2), the inner chamber of described annular cutting knife forms the first space that holds tissue, it is characterized in that: described annular cutting knife (3) is arranged on the described ejector pin seat (1) by bearing arrangement, also form one below the described annular cutting knife bottom surface and be specifically designed to the second space that holds tissue, described second space is by the central space of bearing arrangement, the inner space of the expanding part of ejector pin seat forms, and described second space is a circumferential UNICOM space.
2. tubular binding strument according to claim 1, it is characterized in that: the maximum inner diameter of the internal diameter of described annular cutting knife (3), bearing arrangement and expanding part (12) is suitable.
3. any tubular binding strument according to claim 1 and 2, it is characterized in that: described bearing arrangement comprises all L-shaped bearing inner race (5) and bearing outer ring (4), and both are fastened mutually.
4. tubular binding strument according to claim 3 is characterized in that: the pad (7) that is provided with an annular between described bearing arrangement and the ejector pin seat (1).
5. tubular binding strument according to claim 4, it is characterized in that: the internal diameter of described pad (7) equals the internal diameter of described bearing inner race (5).
6. tubular binding strument according to claim 3, it is characterized in that: described annular cutting knife (3) is fixed on the described bearing inner race (5) by trip bolt (6), the end face of described bearing inner race (5) is close in the bottom surface of described annular cutting knife (3), and described bearing outer ring (4) fixes with ejector pin seat (1), pushing slice of nail (2).
7. tubular binding strument according to claim 3, it is characterized in that: the bottom symmetry of described annular cutting knife has two protuberances (31), and annular cutting knife bottom is divided into the semilune space (32) of two symmetries, described bearing inner race (5) is arranged with the boss (51) of two symmetries, the upper surface of described boss (51) is fixedly connected on the corresponding protuberance (31) of annular cutting knife bottom, and the boss (51) of described bearing inner race (5) is divided into the central space of bearing arrangement in the semilune space (52) of two symmetries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010593197 CN101999919B (en) | 2010-12-17 | 2010-12-17 | Circular tube type binding instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010593197 CN101999919B (en) | 2010-12-17 | 2010-12-17 | Circular tube type binding instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101999919A CN101999919A (en) | 2011-04-06 |
| CN101999919B true CN101999919B (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010593197 Active CN101999919B (en) | 2010-12-17 | 2010-12-17 | Circular tube type binding instrument |
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| CN (1) | CN101999919B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102949222B (en) * | 2011-08-24 | 2015-08-19 | 苏州天臣国际医疗科技有限公司 | Guide |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5205459A (en) * | 1991-08-23 | 1993-04-27 | Ethicon, Inc. | Surgical anastomosis stapling instrument |
| CN1891166A (en) * | 2005-07-08 | 2007-01-10 | 苏州天臣国际医疗科技有限公司 | Rotary scalpel head for surgical binder |
| CN101152100A (en) * | 2005-07-08 | 2008-04-02 | 苏州天臣国际医疗科技有限公司 | Rotary cutter of binding instrument for surgery |
| CN101380243A (en) * | 2007-09-07 | 2009-03-11 | 苏州天臣国际医疗科技有限公司 | Surgery bookbinding apparatus rotary cutter |
| CN201949072U (en) * | 2010-12-17 | 2011-08-31 | 苏州天臣国际医疗科技有限公司 | Round tube type binding instrument |
-
2010
- 2010-12-17 CN CN 201010593197 patent/CN101999919B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5205459A (en) * | 1991-08-23 | 1993-04-27 | Ethicon, Inc. | Surgical anastomosis stapling instrument |
| CN1891166A (en) * | 2005-07-08 | 2007-01-10 | 苏州天臣国际医疗科技有限公司 | Rotary scalpel head for surgical binder |
| CN101152100A (en) * | 2005-07-08 | 2008-04-02 | 苏州天臣国际医疗科技有限公司 | Rotary cutter of binding instrument for surgery |
| CN101380243A (en) * | 2007-09-07 | 2009-03-11 | 苏州天臣国际医疗科技有限公司 | Surgery bookbinding apparatus rotary cutter |
| CN201949072U (en) * | 2010-12-17 | 2011-08-31 | 苏州天臣国际医疗科技有限公司 | Round tube type binding instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101999919A (en) | 2011-04-06 |
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