CN211796758U

CN211796758U - Puncture cannula and puncture outfit

Info

Publication number: CN211796758U
Application number: CN201922403551.3U
Authority: CN
Inventors: 徐凯; 其他发明人请求不公开姓名
Original assignee: Beijing Surgerii Technology Co Ltd
Current assignee: Beijing Surgerii Robot Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-10-30
Anticipated expiration: 2029-12-27

Abstract

The utility model belongs to the technical field of medical instrument, a puncture sleeve pipe and puncture ware is disclosed, this puncture sleeve pipe includes: the pipe body is of a hollow round pipe structure; the rolling assembly is sleeved at the end part of the pipe body, and the distance between the position, closest to the central axis of the pipe body, of the rolling assembly and the central axis is smaller than the pipe radius of the pipe body. The puncture outfit comprises a puncture needle, a puncture outfit main body, a connecting piece and a puncture cannula, wherein the puncture outfit main body is connected between the puncture cannula and the connecting piece, a first channel of the puncture cannula, a second channel of the puncture outfit main body and a third channel of the connecting piece are sequentially communicated, the head of the puncture needle is positioned outside the third channel, and the puncture end of the puncture needle sequentially penetrates through the third channel, the second channel and the first channel and extends out of the first channel to be contacted with the rolling assembly. The rolling assembly is arranged at the end part of the tube body of the puncture sleeve, so that the friction resistance of the surgical instrument or the puncture needle in the inserting and pulling process relative to the puncture sleeve is reduced, and the abrasion of the surgical instrument or the puncture needle is reduced.

Description

Puncture cannula and puncture outfit

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a puncture sleeve pipe and puncture ware.

Background

Minimally invasive surgery has the advantages of small wound, less bleeding, quick recovery and the like, and is widely applied to clinical surgeries. The puncture outfit is an important instrument in the laparoscopic surgery, when the laparoscopic surgery is started, a scalpel is used for cutting the skin epidermis at a selected puncture position, then a puncture needle part and a puncture cannula of the puncture outfit penetrate the skin and enter a body cavity to form a surgical working channel, surgical instruments and lighting equipment are introduced through the channel to complete the surgery, and the sealing performance of the working channel needs to be ensured in the surgical process so that the surgical instruments can smoothly perform the surgical operation in the body cavity.

During operation, one end of the puncture cannula is inserted into the skin, the other end of the puncture cannula is positioned outside the skin, and the surgical instrument enters the body cavity through the passage of the puncture cannula to perform the operation. During the surgical procedure, frequent removal or replacement of surgical instruments is required. At this point, the surgical instrument needs to be removed from the puncture cannula. Because the puncture sleeve is internally provided with the sealing component, the surgical instrument and the end part of the puncture sleeve are matched closely, and in addition, the pressure inside the puncture sleeve is increased sharply due to the existence of blood or body fluid, the difficulty of drawing out the surgical instrument or the puncture needle is large, the operation is inconvenient, and the surgical instrument or the puncture needle is easy to wear when being moved or drawn out.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a puncture cannula to reduce surgical instruments or pjncture needle for the frictional resistance of puncture cannula plug in-process, the phenomenon of reducing wear.

Another object of the present invention is to provide a puncture device to reduce the frictional resistance of the surgical instrument or the puncture needle in the process of inserting and pulling the puncture cannula, and reduce the wear.

To achieve the purpose, the utility model adopts the following technical proposal:

a puncture cannula, comprising:

the pipe body is of a hollow round pipe structure;

the rolling assembly is sleeved at the end of the pipe body, and the distance between the position, closest to the central axis of the pipe body, of the rolling assembly and the central axis is smaller than the pipe radius of the pipe body.

As a preferable technical solution of the above puncture cannula, the rolling assembly includes a connection ring and a plurality of rolling members, the plurality of rolling members are alternately rotatably sleeved on the connection ring, and the connection ring is sleeved on the tube body.

As a preferable technical solution of the above-mentioned puncture cannula, a plurality of the rolling members are uniformly distributed along the circumferential direction of the connection ring.

As a preferable technical scheme of the puncture cannula, the rolling part is a roller, a pulley and/or a ball;

preferably, the pulley is a tubular pulley made of plastic.

A puncture outfit comprises a puncture needle, a puncture outfit body, a connecting piece and the puncture cannula, wherein one end of the puncture outfit body is connected with the puncture cannula, the other end of the puncture outfit body is connected with the connecting piece, the puncture cannula is provided with a first channel, the puncture outfit body is provided with a second channel, and the connecting piece is provided with a third channel; the first channel, the second channel and the third channel are communicated in sequence, the head of the puncture needle is positioned outside the third channel, and the puncture end of the puncture needle penetrates through the third channel, the second channel and the first channel in sequence and extends out of the first channel to be in contact with the rolling assembly.

As a preferable technical scheme of the puncture outfit, the puncture outfit further comprises a conical cap sleeved outside the puncture needle, and the conical cap is positioned between the head and the connecting piece;

preferably, the conical cap is made of an elastic material.

As a preferable technical solution of the above puncture outfit, the puncture outfit further comprises a sealing assembly, and the sealing assembly is hermetically disposed between the puncture outfit body and the connecting member.

As a preferable aspect of the puncture instrument, the sealing assembly includes a choke valve configured to allow the puncture needle or the surgical instrument to pass therethrough and to seal the second channel.

As a preferable technical solution of the puncture outfit, the sealing assembly further comprises a sealing valve, and two side end surfaces of the sealing valve respectively abut against the connecting piece and the choke valve;

preferably, the sealing valve is provided with a circular through hole for the puncture needle or the surgical instrument to pass through and tightly wrap the puncture needle or the surgical instrument.

As a preferable technical solution of the puncture outfit, the choke valve comprises a connected annular flange and a main body part made of elastic material; one end of the main body part is open, and the other end of the main body part is provided with a V-shaped gap for a puncture needle or a surgical instrument to pass through;

preferably, the body portion comprises two symmetrically connected partial portions; one end of each split part is provided with an opening, the other end of each split part comprises two elastic planes which are connected in an included angle, and a gap is arranged on the intersected edge of the two elastic planes; the gaps of the two split parts form the V-shaped gap; the V-shaped gap is used for penetrating the puncture needle or the surgical instrument, and an opening of the V-shaped gap deviates from the side where the annular flange is located;

preferably, the annular flange and the body portion are integrally formed.

Compared with the prior art, the utility model discloses an advantage and beneficial effect lie in:

the utility model provides a puncture sleeve pipe sets up the rolling subassembly through body tip at puncture sleeve pipe, makes surgical instruments or pjncture needle remove or take out in puncture sleeve pipe easily to reduce the frictional resistance of surgical instruments or pjncture needle for puncture sleeve pipe plug in-process, improve the operation convenience, reduce the wearing and tearing of surgical instruments or pjncture needle.

The utility model provides a puncture outfit, including foretell puncture sleeve pipe, this puncture outfit can reduce surgical instruments or pjncture needle for the resistance of puncture sleeve pipe plug in-process, improves the operation convenience, reduces the wearing and tearing of surgical instruments or pjncture needle.

Drawings

FIG. 1 is a schematic structural view of a puncture outfit according to an embodiment of the present invention;

FIG. 2 is a schematic view of a structure of a puncture needle according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a body of a puncture cannula according to an embodiment of the present invention;

FIG. 4 is a schematic view of a rolling assembly of the puncture cannula according to an embodiment of the present invention;

FIG. 5 is a schematic view of a portion of the puncture device according to the embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a connector according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a puncture outfit body according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a choke valve according to an embodiment of the present invention;

fig. 9 is a schematic view of another view of the choke valve according to an embodiment of the present invention;

fig. 10 is a schematic view of a choke valve according to another embodiment of the present invention;

fig. 11 is a schematic view of a partial structure of a puncture instrument according to an embodiment of the present invention.

The figures are labeled as follows:

1. puncturing a cannula; 11. a pipe body; 111. avoiding the groove; 12. a rolling component; 121. a connecting ring; 122. a rolling member;

2. puncturing needle; 21. a head portion; 22. a puncture end;

3. a puncture instrument body; 31. a first body; 32. a second tapered tube; 33. a second body;

4. a connecting member; 41. a first connecting body; 42. a first tapered tube; 43. a second connecting body;

5. a conical cap;

6. a choke valve; 61. an annular flange; 62. a main body portion; 621. an elastic plane; 622. a V-shaped gap;

7. and sealing the valve.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly but via another feature. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplicity of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The present embodiment discloses a puncture instrument, which mainly includes a puncture needle 2, a puncture cannula 1, a puncture instrument main body 3, and a connector 4, as shown in fig. 1 and 2. One end of the puncture outfit main body 3 is connected with the puncture sleeve 1, the other end is connected with the connecting piece 4, the puncture needle 2 sequentially penetrates through the connecting piece 4, the puncture outfit main body 3 and the puncture sleeve 1, the head 21 of the puncture needle 2 extends out of the connecting piece 4, and the puncture end 22 of the puncture needle 2 extends out of the puncture sleeve 1.

As shown in fig. 3 to 5, the puncture cannula 1 disclosed in this embodiment includes a tubular body 11 and a rolling assembly 12, wherein the tubular body 11 is a hollow circular tube structure, the rolling assembly 12 is sleeved on an end portion of the tubular body 11, and a distance between a position of the rolling assembly 12 closest to a central axis of the tubular body 11 and the central axis is smaller than a tube radius of the tubular body 11, so that the rolling assembly 12 can contact the puncture needle 2 or the surgical instrument inserted into the tubular body 11, so as to reduce a frictional resistance of the puncture needle 2 or the surgical instrument in an insertion and extraction process with respect to the puncture cannula 1. By arranging the rolling component 12, the friction resistance of the surgical instrument or the puncture needle 2 in the inserting and pulling process relative to the puncture sleeve 1 is reduced, the operation convenience is improved, and the phenomenon that the surgical instrument or the puncture needle 2 is abraded is reduced.

Specifically, the rolling assembly 12 includes a connection ring 121 and a plurality of rolling elements 122, the plurality of rolling elements 122 are alternately and rotatably sleeved on the connection ring 121, and the connection ring 121 is sleeved on the pipe body 11.

Optionally, a plurality of avoiding grooves 111 are circumferentially arranged at intervals at the end of the tube body 11, and the avoiding grooves 111 are used for avoiding the rolling member 122, so that the rolling member 122 can contact with the puncture needle 2 or the surgical instrument penetrating through the tube body 11, and the function of reducing the friction resistance is achieved. Specifically, a plurality of protrusions are circumferentially arranged at intervals at the end of the tube 11, the above-mentioned avoiding groove 111 is formed between two adjacent protrusions, and the protrusions are connected to the connecting ring 121 between two adjacent rolling members 122.

Furthermore, the plurality of rolling members 122 are uniformly distributed along the circumferential direction of the connection ring 121, so that the stability of the insertion and extraction process of the puncture needle 2 or the surgical instrument with respect to the puncture cannula 1 is improved. Accordingly, the plurality of escape grooves 111 are uniformly distributed along the circumferential direction of the pipe body 11, and the connection stability of the protrusion and the connection ring 121 is improved.

Optionally, the rolling members 122 are rollers, pulleys, and/or balls. The pulley is preferably a plastic tubular pulley, has certain strength and toughness, and ensures that the friction force between the surgical instrument or the puncture needle 2 and the puncture sleeve 1 is reduced when the surgical instrument or the puncture needle is moved and extracted, thereby preventing abrasion.

The puncture cannula 1 is provided with a first channel, the puncture device body 3 is provided with a second channel, the connecting piece 4 is provided with a third channel, the first channel, the second channel and the third channel are sequentially communicated, the head 21 of the puncture needle 2 is positioned outside the third channel, and the puncture end 22 of the puncture needle 2 sequentially penetrates through the third channel, the second channel and the first channel and extends out of the first channel to be contacted with the rolling piece 122.

Preferably, an air passage is formed through the puncture needle 2 in the axial direction thereof. And the puncture end 22 of the puncture needle 2 is provided with an air outlet which is communicated with the air passage of the puncture needle 2, when the puncture needle 2 penetrates through the skin and enters the body cavity, the air in the body cavity enters the air passage through the air outlet, and the air flow is sensed at the end part of the air passage of the puncture needle 2 through the touch, so that the puncture needle 2 is judged to have punctured and entered the body cavity. Further, the piercing end 22 of the puncture needle 2 is provided with cutter teeth, thereby facilitating smooth entry of the puncture needle 2 into the body cavity.

In this embodiment, the puncture device further comprises a conical cap 5, the conical cap 5 is sleeved on the puncture needle 2, one end of the conical cap 5 abuts against the head 21, and the other end abuts against the connecting piece 4. In particular, the conical cap 5 may be made of an elastic material. By providing the tapered cap 5, on the one hand, the operational convenience can be improved, and on the other hand, the structural stability of the puncture needle 2 can be improved, and the gripping comfort of the puncture needle 2 can be improved.

One end of the puncture outfit main body 3 is sleeved on the near end of the puncture cannula 1, and the other end is sleeved in the connecting piece 4. Specifically, as shown in fig. 6, the connecting member 4 includes a first connecting body 41, a first tapered tube 42, and a second connecting body 43, the first connecting body 41 and the second connecting body 43 have a cylindrical shape, the second connecting body 43 has a diameter larger than that of the first connecting body 41, and both ends of the first tapered tube 42 are connected to the first connecting body 41 and the second connecting body 43, respectively. As shown in fig. 7, the puncture device main body 3 includes a first main body 31, a second tapered tube 32, and a second main body 33, the first main body 31 is fitted to the second connecting body 43, the second main body 33 is fitted to the puncture cannula 1, and both ends of the second tapered tube 32 are connected to the first main body 31 and the second main body 33, respectively. More specifically, one end of the first main body 31 is in a cylindrical shape adapted to the second connecting main body 43, and the second connecting main body 43 is sleeved outside the first main body 31 to realize the fastening connection between the connecting member 4 and the puncture outfit main body 3. The second main body 33 is in a cylindrical shape matched with the puncture cannula 1, and the second main body 33 is sleeved at the near end of the puncture cannula 1 to realize the fastening connection of the connecting piece 4 and the puncture cannula 1.

It is further preferred that the end of the first body 31 connected to the second connecting body 43 is provided with a step surface and a shoulder for accurate positioning of the first body 31 and the second connecting body 43. In order to improve the connection stability, the first main body 31 and the second connecting main body 43, and the second main body 33 and the puncture cannula 1 are connected in an interference manner.

In order to improve the sealing performance of the puncture outfit, the puncture outfit further comprises a sealing assembly which is arranged between the puncture outfit body 3 and the connecting piece 4 in a sealing way.

Specifically, as shown in fig. 5 and 11, the sealing assembly includes a choke valve 6 and a sealing valve 7, one end of the choke valve 6 is sleeved in the first body 31, the other end abuts against one side of the sealing valve 7, and the other side of the sealing valve 7 abuts against the first tapered tube 42. The sealing valve 7 and the choke valve 6 are arranged to ensure the sealing performance of the puncture outfit, so that air leakage in the operation process is prevented, and the gas input into the body cavity can cause the abdominal cavity to sink to influence the normal operation of the operation. Preferably, the sealing valve 7 is provided with a circular through hole, the diameter of which is slightly smaller than the outer diameter of the puncture needle 2 or the surgical instrument, or the circular through hole is the same as the outer diameter of the puncture needle 2 or the surgical instrument, and the circular through hole is used for the puncture needle 2 or the surgical instrument to pass through and tightly wrapping the puncture needle 2 or the surgical instrument.

Further, as shown in fig. 8-11, the choke valve 6 is configured to allow the piercing needle 2 or surgical instrument to pass therethrough and to seal the second passage.

Specifically, the choke valve 6 includes a main body portion 62 made of an elastic material and an annular flange 61 connected, the annular flange 61 abutting against the sealing valve 7. The main body 62 is open at one end and has a V-shaped slit 622 at the other end through which the puncture needle 2 or a surgical instrument passes. Specifically, the main body portion 62 includes two symmetrically connected split portions, one end of each split portion is open, the other end includes two elastic planes 621 connected at an included angle, a gap is formed on the intersected edge of the two elastic planes 621, a V-shaped gap 622 is formed by the gaps of the two split portions, the V-shaped gap 622 is used for penetrating the puncture needle 2 or the surgical instrument, and the opening of the V-shaped gap 622 deviates from the side where the annular flange 61 is located. The inward-concave V-shaped gap 622 facilitates the insertion or extraction of the surgical instrument or the puncture needle 2, and after the surgical instrument or the puncture needle 2 is extracted, the V-shaped gap 622 can be rapidly closed under the elastic action, so that the sealing effect is better. Preferably, the annular flange 61 and the main body portion 62 are integrally formed for ease of manufacture.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A puncture cannula, comprising:

the pipe body (11), the pipe body (11) is a hollow round pipe structure;

the rolling component (12) is sleeved at the end part of the pipe body (11), and the distance between the position, closest to the central axis of the pipe body (11), of the rolling component (12) and the central axis is smaller than the pipe radius of the pipe body (11).

2. The puncture cannula according to claim 1, wherein the rolling assembly (12) comprises a connecting ring (121) and a plurality of rolling members (122), the plurality of rolling members (122) are rotatably sleeved on the connecting ring (121) at intervals, and the connecting ring (121) is sleeved on the tube body (11).

3. A puncture cannula according to claim 2, characterized in that a plurality of the rolling members (122) are evenly distributed along the circumference of the connection ring (121).

4. A puncture cannula according to claim 2, characterized in that the rolling member (122) is a roller, a pulley and/or a ball.

5. The puncture cannula of claim 4, wherein the pulley is a tubular pulley made of plastic.

6. A puncture instrument comprising a puncture needle (2), a puncture instrument body (3), a connecting member (4), and a puncture cannula (1) according to any one of claims 1 to 5, wherein one end of the puncture instrument body (3) is connected to the puncture cannula (1) and the other end is connected to the connecting member (4), the puncture cannula (1) has a first channel, the puncture instrument body (3) has a second channel, and the connecting member (4) has a third channel; the first channel, the second channel and the third channel are communicated in sequence, the head (21) of the puncture needle (2) is located on the outer side of the third channel, and the puncture end (22) of the puncture needle (2) penetrates through the third channel, the second channel and the first channel in sequence, extends out of the first channel and contacts with the rolling component (12).

7. A puncture instrument according to claim 6, characterized in that it further comprises a conical cap (5) which is placed over the puncture needle (2), said conical cap (5) being located between the head (21) and the connecting piece (4).

8. Puncture device according to claim 7, characterized in that the conical cap (5) is made of an elastic material.

9. A puncture instrument according to claim 6, characterized by further comprising a sealing assembly sealingly arranged between the puncture instrument body (3) and the connecting member (4).

10. A puncture instrument according to claim 9, characterized in that the sealing assembly comprises a choke valve (6), the choke valve (6) being configured to allow the puncture needle (2) or a surgical instrument to pass through and being able to seal the second passage.

11. A puncture instrument according to claim 10, wherein the sealing assembly further comprises a sealing valve (7), and both end surfaces of the sealing valve (7) respectively abut against the connecting member (4) and the choke valve (6).

12. A puncture device according to claim 11, characterized in that the sealing valve (7) is provided with a circular through hole for the puncture needle (2) or the surgical instrument to pass through and tightly wrap the puncture needle (2) or the surgical instrument.

13. A puncture device according to claim 10, wherein the choke valve (6) comprises a connected annular flange (61) and a body portion (62) made of an elastic material; the main body part (62) has an opening at one end and a V-shaped slit (622) at the other end through which a puncture needle (2) or a surgical instrument passes.

14. A puncture instrument according to claim 13, characterized in that the main body part (62) comprises two symmetrically connected partial parts; one end of each split part is provided with an opening, the other end of each split part comprises two elastic planes (621) connected in an included angle, and a gap is arranged on the intersected edge of the two elastic planes (621); the slits of the two split portions constitute the V-shaped slit (622); the V-shaped gap (622) is used for penetrating the puncture needle (2) or the surgical instrument, and the opening of the V-shaped gap (622) is away from the side of the annular flange (61).

15. A puncture instrument according to claim 13, characterized in that the annular flange (61) and the main body (62) are integrally formed.