CN210521068U

CN210521068U - Puncture cannula

Info

Publication number: CN210521068U
Application number: CN201920837131.3U
Authority: CN
Inventors: 文进
Original assignee: Foshan Special Medical Catheter Co ltd
Current assignee: FOSHAN SPECIAL MEDICAL CATHETER Co.,Ltd.; Peking Union Medical College Hospital Chinese Academy of Medical Sciences
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2020-05-15
Anticipated expiration: 2029-06-03

Abstract

The utility model provides a puncture sleeve, including one end have the open-ended valve body, locate the upper cover on the opening with valve body fixed connection's sleeve pipe and lid, be equipped with choke gasket and plane gasket in the valve body, the upper cover is fixed with the valve body buckle, and choke gasket lock is fixed in the opening part and by the upper cover, and plane gasket snap-on is close to one side of choke gasket in the upper cover, and the both sides of valve body are equipped with fixed buckle, and the inboard of upper cover is equipped with the first recess with fixed buckle lock. The utility model provides a puncture sleeve pipe, the choke gasket is direct through upper cover and valve body fixed connection, can enough guarantee the stability of connecting between upper cover, valve body and the choke gasket, and the structure is comparatively simple simultaneously need not increase the volume of extra part increase whole valve body, can enough guarantee its sealed effect and connection stability, and the volume of valve body is less, can avoid operating the too big production of valve body volume when the hole site is nearer to interfere, influences the operation effect.

Description

Puncture cannula

Technical Field

The utility model relates to the technical field of medical treatment puncture instrument, concretely relates to puncture sleeve pipe.

Background

The disposable minimally invasive puncture outfit is an important instrument in endoscopic surgery, is mainly applied to the endoscopic surgery such as surgical minimally invasive surgery, gynecological minimally invasive surgery, thoracic surgery, urinary surgery and the like, is a surgical instrument matched with an extrathoracic endoscope and an extraabdominal endoscope, and is used for a specialist to puncture the abdominal cavity, convey gas into the abdominal cavity and establish a passage for the endoscope and the surgical instrument to enter and exit the abdominal cavity from the outside.

The disposable puncture tube generally comprises a puncture cannula and a puncture cone, the puncture cone can penetrate into the puncture cannula, the puncture cannula generally comprises a valve body and a cannula, and threads are formed on the cannula. When carrying out uropoiesis surgery operation, because the operation hole site is nearer, disposable puncture tube among the prior art is in order to guarantee its sealed effect and connection stability, simultaneously for convenient handheld the inserting, therefore the volume of valve body is great, and the operation hole site is the valve body volume when nearer too big can produce the interference, influences the operation effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a puncture cannula to solve the technical problem who exists among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: there is provided a puncture cannula comprising: one end of the valve body is provided with an open valve body, a sleeve fixedly connected with the valve body and a cover are arranged on the upper cover on the opening, a gas barrier sealing sheet and a plane sealing sheet are arranged in the valve body, the upper cover is fixed with the valve body buckle, the gas barrier sealing sheet is buckled at the opening and fixed by the upper cover, the plane sealing sheet is directly fixed on one side of the upper cover close to the gas barrier sealing sheet, the two sides of the valve body are provided with fixed buckles, and the inner side of the upper cover is provided with a first groove buckled with the fixed buckles.

Further, the ratio of the length of the valve body to the length of the sleeve is, for example, 1:4 to 1: 7.

Furthermore, the outer edge of the valve body is also provided with a limiting bulge, and the upper cover is provided with a fixing hole matched with the limiting bulge.

Further, the gas-barrier sealing sheet comprises an installation step clamped with the upper cover and the valve body and a sealing cone fixedly connected with the installation step.

Further, the inside wall of valve body is equipped with first step groove, the inboard of upper cover also be equipped with first step groove matched with second recess, first step groove with the second recess matches and with installation step looks block.

Further, the cross section of one end of the mounting step, which is far away from the sealing cone body, is circular.

Furthermore, a second stepped groove for fixing the plane sealing sheet is further formed in the inner side of the upper cover.

Furthermore, the outer portion of the sleeve is provided with a plurality of anti-skidding rings, and the anti-skidding rings and the sleeve are integrally formed.

Furthermore, the anti-skid ring is provided with a first inclined surface and a second inclined surface which are obliquely arranged on the sleeve, the first inclined surface is connected with the second inclined surface, and the joint of the first inclined surface and the second inclined surface is in a circular arc shape.

Furthermore, an air injection valve is arranged on one side of the valve body and communicated with the valve body.

The utility model provides a puncture sleeve's beneficial effect lies in: compared with the prior art, the utility model discloses puncture sleeve pipe, upper cover and valve body directly cooperate through fixed buckle and first recess, thereby realize buckle fixed connection, the choke gasket is also directly through upper cover and valve body fixed connection, can enough guarantee the upper cover, the stability of connecting between valve body and the choke gasket, the structure is comparatively simple simultaneously need not increase the volume that extra part increases whole valve body, can enough guarantee its sealed effect and connection stability, the volume of valve body is less, can avoid operating the hole site when nearer the valve body is bulky can produce the interference, influence the operation effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a puncture cannula according to an embodiment of the present invention;

FIG. 2 is a partially enlarged schematic view of a portion A in FIG. 1;

fig. 3 is an exploded view of a puncture cannula according to an embodiment of the present invention;

FIG. 4 is a front view of the puncture cannula of FIG. 3;

FIG. 5 is a sectional view taken along line B-B of FIG. 4;

fig. 6 is a schematic perspective view of an upper cover according to an embodiment of the present invention;

fig. 7 is a schematic perspective view of a valve body and a sleeve according to an embodiment of the present invention.

Description of reference numerals:

1. a valve body; 2. a sleeve; 3. an upper cover; 4. a gas barrier sealing sheet; 5. a planar sealing piece; 6. an air injection valve; 11. an opening; 12. fixing the buckle; 13. a limiting bulge; 14. a first step groove; 21. an anti-slip ring; 211. a first inclined surface; 212. a second inclined surface; 31. a first groove; 32. a fixing hole; 33. a second groove; 34. a second stepped groove; 41. mounting a step; 42. sealing the vertebral body.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 to 5, the puncture cannula of the present invention will now be described. Puncture sleeve pipe, including one end have opening 11 the valve body 1, with 1 fixed connection's of valve body sleeve pipe 2 and lid are located upper cover 3 on the opening 11, be equipped with choke gasket 4 and plane gasket 5 in the valve body 1, upper cover 3 with 1 buckle of valve body is fixed, choke gasket 4 lock in opening 11 department and by upper cover 3 is fixed, plane gasket 5 direct fixation in upper cover 3 is close to one side of choke gasket 4, the both sides of valve body 1 are equipped with fixed buckle 12, the inboard of upper cover 3 be equipped with the first recess 31 of fixed buckle 12 lock.

The utility model provides a puncture sleeve, compared with the prior art, upper cover 3 and valve body 1 directly cooperate through fixed buckle 12 and first recess 31, thereby realize buckle fixed connection, choke gasket 4 also directly passes through upper cover 3 and valve body 1 fixed connection, can enough guarantee upper cover 3, the stability of connecting between valve body 1 and the choke gasket 4, the structure is comparatively simple simultaneously and need not increase the volume of extra part increase whole valve body 1, can enough guarantee its sealed effect and connection stability, valve body 1's volume is less, can avoid operating the aperture site to produce when nearer excessively greatly and interfere, influence the operation effect.

Further, referring to fig. 1 to 5, as an embodiment of the puncture cannula provided by the present invention, a ratio of the length of the valve body 1 to the length of the cannula 2 is, for example, 1:4 to 1: 7. Specifically, the length of the valve body 1 refers to the length of the valve body 1 in the extending direction, the length of the sleeve 2 also refers to the length of the sleeve 2 in the extending direction, the extending direction of the valve body 1 is consistent with the extending direction of the sleeve 2, and when the ratio of the length of the valve body 1 to the length of the sleeve 2 is 1:4 to 1:7, for example, the end of the valve body 1 of the whole puncture sleeve occupies a small ratio, so that the puncture sleeve can be operated more conveniently, and interference and influence on the operation effect are avoided. Of course, according to practical situations and specific requirements, in other embodiments of the present invention, the ratio of the length of the valve body 1 to the length of the sleeve 2 may also be 1:3 or 1:8, etc., and is not limited herein.

Further, please refer to fig. 5 to 7, as a specific embodiment of the puncture cannula provided by the present invention, the outer edge of the valve body 1 is further provided with a limiting protrusion 13, and the upper cover 3 is provided with a fixing hole 32 matched with the limiting protrusion 13. Specifically, the outer edge of the valve body 1 is convexly provided with a flange for abutting against and limiting the upper cover 3, the limiting protrusion 13 is arranged on the flange, the limiting protrusion 13 can be placed in the fixing hole 32 after the upper cover 3 is installed, the cross section of the limiting protrusion 13 is consistent with the shape of the fixing hole 32, so that the relative position between the upper cover 3 and the valve body 1 can be limited through the limiting protrusion 13 and the fixing hole 32, and the upper cover 3 and the valve body 1 cannot rotate when being fixed.

Further, referring to fig. 3 and 5, as a specific embodiment of the puncture cannula provided by the present invention, the gas-barrier sealing piece 4 includes an installation step 41 engaged with the upper cover 3 and the valve body 1, and a sealing cone 42 fixedly connected with the installation step 41. Specifically, the gas barrier sealing sheet 4 is installed inside the inner cavity of the valve body 1, the gas barrier sealing sheet 4 can be abutted against a puncture cone inserted into the valve body 1, so as to achieve the gas barrier effect, the installation step 41 can be clamped between the upper cover 3 and the valve body 1, the clamping manner can be clamping or can be directly clamped between the upper cover 3 and the valve body 1, and the sealing cone 42 is generally arranged on one side of the installation step 41 away from the upper cover 3.

Further, referring to fig. 3 to 5, as a specific embodiment of the puncture cannula provided by the present invention, the inner sidewall of the valve body 1 is provided with a first step groove 14, the inner side of the upper cover 3 is also provided with a second groove 33 matching with the first step groove 14, and the first step groove 14 matches with the second groove 33 and is engaged with the mounting step 41. Specifically, the first stepped groove 14 is disposed on the side wall of the internal cavity of the valve body 1, the second groove 33 is also disposed on the side of the upper cover 3 opposite to the first stepped groove 14, the mounting step 41 can be directly clamped between the first stepped groove 14 and the second groove 33, and the end of the mounting step 41 can also be protruded so as to be clamped between the first stepped groove 14 and the second groove 33 in a buckling manner.

Further, referring to fig. 5, as a specific embodiment of the puncture cannula provided by the present invention, the cross-sectional shape of the end of the mounting step 41 away from the sealing cone 42 is circular. Specifically, one end of the mounting step 41, which is far away from the sealing cone 42, is used for cooperating with the first step groove 14 and the second groove 33, and a circular protrusion is adopted, so that a clamping connection can be formed between the mounting step and the first step groove 14 and the second step groove 34, and then the fixed connection between the gas-blocking sealing sheet 4, the upper cover 3 and the valve body 1 is realized. Of course, according to practical and specific requirements, in other embodiments of the present invention, the cross section of the end of the mounting step 41 away from the sealing cone 42 may also be square or trapezoidal, and the like, which is not limited herein.

Further, referring to fig. 3, 5 and 6, as a specific embodiment of the puncture cannula provided by the present invention, the inner side of the upper cover 3 is further provided with a second step groove 34 for fixing the planar sealing piece 5. Specifically, the planar sealing sheet 5 is also arranged inside the valve body 1, the second step groove 34 is arranged on the inner side wall of the upper cover 3, and the gas barrier sealing sheet 4 can be fixedly connected between the planar sealing sheet 5 and the second step groove 34 inside the valve body 1 through welding, bonding or other connection modes. The flat sealing sheet 5 is designed to prevent air leakage during insertion of the instrument or puncture awl 7.

Further, please refer to fig. 1 and fig. 2, as a specific embodiment of the puncture cannula provided by the present invention, a plurality of anti-slip rings 21 are disposed outside the cannula 2, and the anti-slip rings 21 and the cannula 2 are integrally formed. Specifically, antiskid circle 21 sets up the outer fringe at sleeve pipe 2, the outer fringe of antiskid circle 21 is used for contacting with the stomach wall, in order to avoid appearing the phenomenon of sleeve pipe 2 slippage, the effect of fixing on the stomach wall can be guaranteed to the puncture ware through anti-skidding pipe, generally adopt the antiskid circle 21 of right angle shape among the prior art, the cross sectional shape of antiskid circle 21 is the right angle shape promptly, thereby realize the fixed effect of butt through sharp-pointed right angle, but when the puncture ware used out to take out, probably cause the stomach wall to appear the damage.

Further, referring to fig. 1 and 2, as an embodiment of the puncture cannula according to the present invention, the anti-slip ring 21 has a first inclined surface 211 and a second inclined surface 212 obliquely disposed on the cannula 2, the first inclined surface 211 is connected to the second inclined surface 212, and a joint of the first inclined surface 211 and the second inclined surface 212 is a circular arc. Specifically, the first inclined surface 211 and the second inclined surface 212 are inclined surfaces which are inclined compared with the sleeve 2, the cross section of the anti-slip ring 21 can be triangular, the first inclined surface 211 and the second inclined surface 212 correspond to two side edges of the triangle respectively, the sleeve corresponds to the bottom edge of the triangle, the circular arc is located at the top angle of the triangle, the contact area between the anti-slip ring 21 and the abdominal wall can be increased at the moment, the friction force between the anti-slip ring 21 and the abdominal wall is increased, and the phenomenon that the sleeve 2 slips is effectively avoided.

Further, please refer to fig. 1 to 5, as a specific embodiment of the puncture cannula provided by the present invention, an air injection valve 6 is disposed on one side of the valve body 1, and the air injection valve 6 is communicated with the valve body 1. Specifically, gas injection valve 6 sets up in arbitrary one side of valve body 1, need through gas injection valve 6 towards the inside gas injection of cavity of valve body 1 at the in-process of operation, both can realize towards the inside gas injection of valve body 1 through gas injection valve 6, and can also set up the gas injection switch on the gas injection valve 6.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. 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. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. Puncture sleeve pipe, including one end have opening (11) valve body (1), with valve body (1) fixed connection's sleeve pipe (2) and lid are located upper cover (3) on opening (11), be equipped with choke gasket (4) and plane gasket (5), its characterized in that in valve body (1): the upper cover (3) is fixed with the valve body (1) in a buckling mode, the air-blocking sealing piece (4) is buckled at the opening (11) and fixed by the upper cover (3), the plane sealing piece (5) is directly fixed on one side, close to the air-blocking sealing piece (4), of the upper cover (3), fixed buckles (12) are arranged on two sides of the valve body (1), and a first groove (31) buckled with the fixed buckles (12) is arranged on the inner side of the upper cover (3).

2. The puncture cannula of claim 1, wherein: the ratio of the length of the valve body (1) to the length of the sleeve (2) is 1:4 to 1: 7.

3. The puncture cannula of claim 1, wherein: the outer edge of the valve body (1) is also provided with a limiting bulge (13), and the upper cover (3) is provided with a fixing hole (32) matched with the limiting bulge (13).

4. The puncture cannula of claim 1, wherein: the gas-barrier sealing sheet (4) comprises an installation step (41) clamped with the upper cover (3) and the valve body (1) and a sealing cone (42) fixedly connected with the installation step (41).

5. The puncture cannula of claim 4, wherein: the inner side wall of the valve body (1) is provided with a first step groove (14), the inner side of the upper cover (3) is also provided with a second groove (33) matched with the first step groove (14), and the first step groove (14) is matched with the second groove (33) and is clamped with the mounting step (41).

6. The puncture cannula of claim 5, wherein: the cross section of one end of the mounting step (41) far away from the sealing cone body (42) is circular.

7. The puncture cannula of claim 4, wherein: and a second stepped groove (34) for fixing the plane sealing sheet (5) is also formed in the inner side of the upper cover (3).

8. The puncture cannula of any of claims 1 to 7, wherein: the anti-skidding sleeve is characterized in that a plurality of anti-skidding rings (21) are arranged outside the sleeve (2), and the anti-skidding rings (21) and the sleeve (2) are integrally formed.

9. The puncture cannula of claim 8, wherein: the anti-skid ring (21) is provided with a first inclined surface (211) and a second inclined surface (212) which are obliquely arranged on the sleeve (2), the first inclined surface (211) is connected with the second inclined surface (212), and the joint of the first inclined surface (211) and the second inclined surface (212) is in the shape of a circular arc.

10. The puncture cannula of any of claims 1 to 7, wherein: and an air injection valve (6) is arranged on one side of the valve body (1), and the air injection valve (6) is communicated with the valve body (1).