CN213310149U

CN213310149U - Puncture outfit

Info

Publication number: CN213310149U
Application number: CN202020868562.9U
Authority: CN
Inventors: 林杰鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2021-06-01
Anticipated expiration: 2030-05-22

Abstract

The utility model discloses a puncture outfit, which relates to the field of medical apparatus and instruments, and the technical proposal key points thereof comprise a puncture sleeve component, a puncture needle component and a handle component, one end of the puncture sleeve component is connected with the handle component, one end of the handle component is connected with the puncture needle component which penetrates out of the puncture sleeve component, the handle component comprises a mounting seat connected with one end of the puncture sleeve component and a connecting seat connected with one end of the puncture needle component, the mounting seat is provided with a through hole which is coaxial with the puncture sleeve component and is used for the puncture needle component to penetrate out, an elastic sealing element used for sealing the through hole is arranged in the mounting seat, the elastic sealing element comprises a plurality of rubber sheets which are mutually stacked and are in a fan shape and a plurality of conical surface films which are positioned on one side of the puncture needle head and are, the utility model discloses have the effect that can avoid the gas leakage in the abdominal cavity.

Description

Puncture outfit

Technical Field

The utility model relates to a minimally invasive surgery instrument, in particular to a puncture outfit.

Background

The puncture outfit is a surgical instrument which punctures the abdominal wall and provides a channel for other minimally invasive surgical instruments to enter the body cavity, and belongs to a minimally invasive surgical instrument. A penetrator typically includes a cannula for access to other surgical instruments and a penetration rod extending through the cannula. In order to penetrate the skin, the skin epidermis is incised with a scalpel, then the puncture rod penetrates the abdominal wall and enters the body cavity, the tip end of the puncture rod is pushed through the abdominal wall by applying pressure to the proximal end of the puncture rod until it enters the body cavity, and after the puncture device enters the body cavity, the puncture rod is withdrawn, and the cannula can be used as a minimally invasive instrument channel for performing endoscopic surgery and endoscopic procedures.

At present, chinese patent with publication number CN203953764U discloses a puncture outfit, which comprises a puncture outfit, a puncture cannula assembly and a puncture needle assembly, wherein the handle of the puncture cannula assembly is fixedly connected with the lower part of the handle, a through hole is arranged at the center of the puncture outfit, a sight glass lock is arranged in the handle, two connecting columns are arranged on the sight glass lock, the connecting columns are clamped in a clamping groove under the handle, and at least one connecting column is provided with a torsion spring.

The prior art is similar to the puncture outfit, and the puncture outfit usually causes gas leakage in the abdominal cavity due to insufficient sealing performance of the through hole when an endoscope is installed, so that the improvement space is needed.

SUMMERY OF THE UTILITY MODEL

To the deficiency that prior art exists, an object of the utility model is to provide a puncture outfit, its advantage lies in can avoiding the gas leakage in the abdominal cavity.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a puncture outfit, includes puncture cannula assembly, puncture needle subassembly and handle components, puncture cannula assembly's one end with handle components connects, handle components's one end is connected with wears out puncture cannula assembly's puncture needle subassembly, handle components including connect in puncture cannula assembly one end the mount pad and connect in the connecting seat of puncture needle subassembly one end, seted up on the mount pad with puncture cannula assembly is with the axle center and supplies the through-hole that puncture needle subassembly wore out, be provided with in the mount pad and be used for sealing the elastic sealing element of through-hole, elastic sealing element includes that a plurality of pile up mutually and be sectorial rubber piece and a plurality of be located the rubber piece towards puncture needle subassembly syringe needle one side and the conical surface film that piles up mutually.

Through adopting above-mentioned technical scheme, when needs use the puncture ware to perform the operation to the patient, penetrate the patient abdominal cavity with the puncture ware, then the pulling connecting seat, drive the outside removal of puncture needle subassembly, and shift out the puncture cannula subassembly, insert the endoscope in the through-hole again, rubber sheet and toper film receive the extrusion and produce deformation, and laminate in proper order on the outer wall of endoscope pipe, and keep laminating when removing the endoscope pipe, consequently have good leakproofness, avoid the intra-abdominal cavity gas leakage.

The utility model discloses further set up to: puncture sleeve subassembly includes that the lower extreme is the sleeve pipe of scarf and is used for the sleeve pipe seat of adapter sleeve and mount pad, be provided with the choke valve of making by rubber materials in the sleeve pipe seat, the choke valve is the round platform form, and the less one end orientation of its diameter the sheathed tube scarf, the center department of choke valve is provided with a word seam.

By adopting the technical scheme, when the puncture outfit is used for performing an operation on a patient, the oblique incision can facilitate an affected part to enter the sleeve; because the air pressure in the abdominal cavity is larger, the circumferential surface of the air-blocking valve is extruded to seal the straight seam, and the air leakage in the abdominal cavity can be effectively avoided.

The utility model discloses further set up to: and reinforcing ribs distributed along the direction of a generatrix of the choke valve are symmetrically arranged on one side of the choke valve facing the inclined notch of the sleeve.

Through adopting above-mentioned technical scheme, the structural strength of choke valve can be strengthened in the setting of strengthening rib, avoids choke valve upset or is pulled by the apparatus and tear the area and turn over when atmospheric pressure is great.

The utility model discloses further set up to: and a flange used for sealing the joint of the sleeve seat and the mounting seat is arranged at the end with the larger diameter of the choke valve.

Through adopting above-mentioned technical scheme, the setting of flange can avoid gaseous from casing seat and mount pad junction to spill over, improves the gas tightness of puncture ware.

The utility model discloses further set up to: the outer wall of the sleeve is a conical surface with a smaller lower end.

Through adopting above-mentioned technical scheme, the design of conical surface can be when inserting the puncture ware in the abdominal cavity, makes the outer wall of sleeve pipe inseparabler with being connected of patient's wound department, avoids the gas in the abdominal cavity to spill over through wound department.

The utility model discloses further set up to: the outer wall of the sleeve is provided with a plurality of positioning rings distributed along the length direction of the sleeve, and the cross section of each positioning ring is hemispherical.

By adopting the technical scheme, when the puncture outfit is inserted into the abdominal cavity, the positioning ring is abutted against the wound, so that the contact stability of the puncture outfit and the abdominal wall can be improved, and the separation of the outer wall of the sleeve from the abdominal wall when the endoscope or the minimally invasive instrument is moved is avoided, so that the gas in the abdominal cavity is prevented from overflowing.

The utility model discloses further set up to: the arc-shaped edges of the rubber sheets are in a tooth shape, and the arc-shaped edges of the adjacent rubber sheets are meshed.

Through adopting above-mentioned technical scheme, the setting of flute can make the rubber sheet inseparabler with the outer wall laminating of endoscope pipe, further improves the leakproofness to the endoscope pipe.

The utility model discloses further set up to: the circumferential angle of the conical surface film is 270-300 degrees.

By adopting the technical scheme, the circumferential angle of the conical surface film is limited to 270-300 degrees, so that the conical surface film can wrap the outer wall of the endoscope tube more tightly, and the insertion of the endoscope tube is not influenced.

To sum up, the utility model has the advantages of it is following:

1. when the puncture outfit is needed to be used for operating a patient, the puncture outfit penetrates into the abdominal cavity of the patient, then the connecting seat is pulled to drive the puncture needle assembly to move outwards and move out of the puncture cannula assembly, the endoscope is inserted into the through hole, the rubber sheet and the conical film are extruded to deform and are sequentially attached to the outer wall of the endoscope tube, and the attachment is kept when the endoscope tube is moved, so that the puncture outfit has good sealing performance and avoids gas leakage in the abdominal cavity;

2. by arranging the air-blocking valve, the straight seam can be closed under the action of the air pressure in the abdominal cavity, so that the air leakage in the abdominal cavity is further avoided;

3. by arranging the positioning ring, the contact stability of the puncture outfit and the abdominal wall can be improved, and the separation of the outer wall of the sleeve from the abdominal wall when the endoscope or minimally invasive instrument is moved is avoided.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a schematic view of an exploded structure of the present embodiment;

FIG. 3 is a schematic structural view of a projected rubber sheet mounting structure in the present embodiment;

FIG. 4 is a schematic view of the structure of the film with a convex cone surface in this embodiment.

Description of reference numerals: 1. a piercing cannula assembly; 2. a sleeve; 3. a cannula holder; 4. an introducer needle assembly; 5. a handle assembly; 51. a mounting seat; 52. a connecting seat; 6. a through hole; 7. an elastomeric seal; 71. a rubber sheet; 72. a conical surface film; 8. a choke valve; 9. sewing in a straight line; 10. reinforcing ribs; 11. a flange; 12. a retaining ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a puncture outfit, as shown in fig. 1 and 2, including puncture cannula subassembly 1, pjncture needle subassembly 4 and handle components 5, the one end and the handle components 5 of puncture cannula subassembly 1 are connected, the one end of handle components 5 is connected with pjncture needle subassembly 4 of wearing out puncture cannula subassembly 1, handle components 5 is including connecting in the mount pad 51 of puncture cannula subassembly 1 one end and connecting in the connecting seat 52 of pjncture needle subassembly 4 one end, set up on the mount pad 51 with puncture cannula subassembly 1 with the axle center and supply the through-hole 6 that pjncture needle subassembly 4 wore out, install the elastic sealing member 7 that is used for sealing through-hole 6 in the mount pad 51, elastic sealing member 7 includes that a plurality of pile up each other and be sectorial rubber piece 71 and a plurality of be located rubber piece 71 towards pjncture needle subassembly. When a patient is operated, the puncture outfit is inserted into the abdominal cavity of the patient, the puncture needle assembly 4 is pulled out, and the endoscope tube is inserted into the through hole 6, and at the moment, the rubber sheet 71 and the conical surface film 72 are always tightly attached to the outer side of the endoscope tube, so that gas leakage in the abdominal cavity is avoided.

As shown in fig. 2, the puncture cannula assembly 1 includes a cannula 2 with a beveled cut at the lower end and a cannula holder 3 for connecting the cannula 2 and the mounting seat 51, the beveled cut can facilitate an affected part to enter the cannula 2, a choke valve 8 made of rubber material is installed in the cannula holder 3, the choke valve 8 is in a round table shape, the end with a smaller diameter faces the beveled cut of the cannula 2, and a straight slit 9 is formed in the center of the choke valve 8. When the puncture outfit is used for operating a patient, the circumferential surface of the air-blocking valve 8 is extruded to seal the straight seam 9 because of the higher air pressure in the abdominal cavity, so that the air leakage in the abdominal cavity can be effectively avoided.

Further, in order to enhance the structural strength of the choke valve 8 and prevent the choke valve 8 from being turned over or pulled by an instrument when the air pressure is high, the side of the choke valve 8 facing the oblique notch of the sleeve 2 is symmetrically connected with reinforcing ribs 10 distributed along the generatrix direction of the side.

Further, in order to avoid gas from escaping from the connection between the cannula holder 3 and the mounting seat 51 and to improve the air tightness of the puncture instrument, the larger diameter end of the choke valve 8 in this embodiment extends with a flange 11 for sealing the connection between the cannula holder 3 and the mounting seat 51.

As shown in fig. 1, the outer wall of the casing 2 has a tapered surface with a smaller lower end. When the puncture outfit is inserted into the abdominal cavity, the outer wall of the sleeve 2 is gradually and tightly connected with the wound of a patient, so that the gas in the abdominal cavity can be prevented from overflowing through the wound.

Furthermore, the outer wall of the sleeve 2 is provided with a plurality of positioning rings 12 distributed along the length direction, and the cross section of each positioning ring 12 is hemispherical. When the puncture outfit is inserted into the abdominal cavity, the positioning ring 12 is abutted against the wound, so that the contact stability of the puncture outfit and the abdominal wall can be improved, and the separation of the outer wall of the sleeve 2 from the abdominal wall when the endoscope or the minimally invasive instrument is moved is avoided, so that the gas in the abdominal cavity is prevented from overflowing.

As shown in fig. 3, in order to make the rubber sheet 71 adhere to the outer wall of the endoscope tube more closely and to further improve the sealing property against the endoscope tube, the arcuate edges of the rubber sheet 71 are toothed and the arcuate edges of the adjacent rubber sheets 71 are engaged with each other in this embodiment.

Further, as shown in fig. 4, the circumferential angle of the conical surface film 72 is 270 degrees, which can make the conical surface film 72 wrap the outer wall of the endoscope tube more tightly without affecting the insertion of the endoscope tube.

The utility model discloses a working process and beneficial effect as follows: when a patient is operated, the sleeve 2 enters the abdominal cavity of the patient under the guidance of the puncture needle assembly 4, the positioning ring 12 is abutted to the abdominal wall, the puncture needle is pulled out through the connecting seat 52, the endoscope is inserted into the through hole 6, and at the moment, the rubber sheet 71 and the conical surface film 72 wrap the outer wall of the endoscope tube, so that the gas in the abdominal cavity is prevented from leaking from the through hole 6.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. A puncture instrument comprising a puncture cannula assembly (1), a puncture needle assembly (4) and a handle assembly (5), characterized in that: one end of the puncture cannula component (1) is connected with the handle component (5), one end of the handle component (5) is connected with a puncture needle component (4) which penetrates out of the puncture cannula component (1), the handle component (5) comprises a mounting seat (51) connected with one end of the puncture cannula component (1) and a connecting seat (52) connected with one end of the puncture needle component (4), the mounting seat (51) is provided with a through hole (6) which is coaxial with the puncture cannula component (1) and through which the puncture needle component (4) passes, an elastic sealing element (7) for sealing the through hole (6) is arranged in the mounting seat (51), the elastic sealing element (7) comprises a plurality of rubber sheets (71) which are stacked mutually and are in a fan shape and a plurality of conical surface films (72) which are positioned on one side of the rubber sheets (71) facing the needle head of the puncture needle assembly (4) and are stacked mutually.

2. A puncture instrument according to claim 1, characterized in that: puncture sleeve subassembly (1) is sleeve pipe (2) of scarf and is used for sleeve pipe (2) and sleeve seat (3) of mount pad (51) including the lower extreme, be provided with choke valve (8) of being made by rubber materials in sleeve seat (3), choke valve (8) are the round platform form, and the less one end orientation of its diameter the scarf of sleeve pipe (2), the center department of choke valve (8) is provided with a word seam (9).

3. A puncture instrument according to claim 2, characterized in that: one side of the choke valve (8) facing the inclined cut of the sleeve (2) is symmetrically provided with reinforcing ribs (10) distributed along the generatrix direction.

4. A puncture instrument according to claim 2, characterized in that: the larger diameter end of the choke valve (8) is provided with a flange (11) for sealing the joint of the sleeve seat (3) and the mounting seat (51).

5. A puncture instrument according to claim 2, characterized in that: the outer wall of the sleeve (2) is a conical surface with a smaller lower end.

6. A puncture instrument according to claim 1, characterized in that: the outer wall of the sleeve (2) is provided with a plurality of positioning rings (12) distributed along the length direction of the sleeve, and the cross sections of the positioning rings (12) are hemispherical.

7. A puncture instrument according to claim 6, characterized in that: the arc-shaped edges of the rubber sheets (71) are toothed, and the arc-shaped edges of the adjacent rubber sheets (71) are meshed.

8. A puncture instrument according to claim 1, characterized in that: the circumferential angle of the conical surface film (72) is 270-300 degrees.