CN206630651U - A kind of puncture outfit - Google Patents

Abstract

The utility model discloses a kind of puncture outfit, including puncture awl, seal cap and puncture cannula, seal cap is provided with seal cap briquetting, and it is raised that seal cap briquetting is provided with seal cap briquetting；Puncture cannula is provided with seal, and seal is provided with seal convexity；When seal cap is connected with puncture cannula, seal cap briquetting projection and seal convexity linear contact lay, sealing function is played.Linear contact lay can reduce the raised contact area between seal convexity of seal cap briquetting, low to the flatness requirement of contact surface, and then can simplify seal cap and the production technology of puncture cannula.Linear contact lay causes seal to be diminished by the raised crushing strength of seal cap briquetting, so that small deformation occurs for seal, so that medical personnel can complete the connection of seal cap and puncture cannula with one-handed performance, and then make it that installation operation is more laborsaving, reduce labor intensity；Meanwhile the deformation quantity of seal is small, seal is unlikely to deform, so as to optimize sealing effectiveness.

Description

A kind of puncture outfit

Technical field

Technical field of medical instruments is the utility model is related to, relates in particular to a kind of puncture outfit.

Background technology

Checked in abdominal cavity, in abdominal operation and other minimally invasive or surgical operations, puncture outfit is essential operating theater instruments. Puncture outfit can be established in the stomach wall of human body enters passage, (such as endoscope, to be cut for laparoscope or other operating theater instruments Knife, stapler, seal wire, conduit, filter, support etc.) enter passage intraperitoneal, and that gas disengaging is provided, to control operation institute The pneumoperitoneum needed, to be checked or operation technique.When minimally invasive laparoscopic medical performs the operation beginning, doctor is general first in patient's abdomen Portion scratches a small otch, then is moved down while small otch that the summit alignment of cutting tip is scratched or so reciprocating rotation, Puncture outfit makes puncture cannula pass through patient abdomen cortex.After the completion of puncture, the puncture core bar of puncture outfit is extracted, so as to puncture set Pipe enters abdominal cavity of patients and the passage to abdominal cavity of patients's aeration as operating theater instruments.

In order to avoid operating theater instruments enters abdominal cavity of patients and to generation gas leakage during abdominal cavity of patients's aeration, it is necessary in puncture outfit Middle setting seal.Following defect be present in existing seal configuration and sealing means：1. it is logical between seal cap and puncture cannula Seal and the contact of seal cap briquetting face are crossed to realize sealing, face contact is because contact area is larger, to the flatness of contact surface It is required that it is high, cause complex manufacturing, production cost improves；2. seal loading is easily deformed, rear seal and sealing are deformed The sealing contact surface of cap briquetting can diminish, or even separate, and be easily caused gas leakage；3. face contact is because the area of contact is big, silicon rubber Deflection it is big, cause resistance during installation to increase, be unfavorable for the singlehanded installation of doctor, operation is extremely inconvenient.Disadvantages described above causes to wear Device is pierced in use it occur frequently that gas leak phenomenon, it is impossible to effectively maintain the pneumoperitoneum in abdominal cavity, influence the progress of operation.

The content of the invention

The purpose of this utility model is to provide a kind of puncture outfit, is answered with production technology existing for solving existing puncture outfit The defects of miscellaneous, sealing effectiveness is bad, and installation process bothers.

Therefore, the utility model provides a kind of puncture outfit, including puncture awl, seal cap and puncture cannula, the puncture Cone is connected through the seal cap and the puncture cannula, the seal cap with the puncture cannula；Set in the seal cap There is seal cap briquetting, it is raised that the seal cap briquetting is provided with seal cap briquetting；The puncture cannula is provided with seal, described Seal is provided with seal convexity；When the seal cap is connected with the puncture cannula, the seal cap briquetting is raised and described Seal convexity linear contact lay, so as to play sealing function.

Compared with prior art, the advantages of the utility model and good effect is：The utility model provides a kind of puncture Device, including puncture awl, seal cap and puncture cannula, puncture awl is through seal cap and puncture cannula, seal cap and puncture cannula It is connected；Seal cap is provided with seal cap briquetting, and it is raised that seal cap briquetting is provided with seal cap briquetting；Puncture cannula is provided with sealing Part, seal are provided with seal convexity；When seal cap is connected with puncture cannula, seal cap briquetting is raised and seal convexity line connects Touch, so as to play sealing function.It is raised between seal convexity by seal cap briquetting between seal cap and puncture cannula Linear contact lay realizes sealing function, and linear contact lay can reduce the raised contact area between seal convexity of seal cap briquetting, So as to reduce the flatness requirement of the raised contact surface between seal convexity of seal cap briquetting, and then sealing can be simplified The production technology of cap and puncture cannula, reduce production cost.The raised linear contact lay between seal convexity of seal cap briquetting so that close Sealing is diminished by the raised crushing strength of seal cap briquetting so that small deformation occurs for seal, so that medical care people Member can complete the connection of seal cap and puncture cannula with one-handed performance, and then make it that installation operation is more laborsaving, reduce labor intensity； Meanwhile the deformation quantity of seal is small, seal is unlikely to deform, so as to optimize sealing effectiveness.

After specific embodiment of the present utility model is read in conjunction with the figure, other features and advantage of the present utility model will become Obtain clearer.

Brief description of the drawings

Fig. 1 is a kind of structure decomposition figure of embodiment of the utility model puncture outfit；

Fig. 2 is the sectional view of the seal cap of the utility model puncture outfit；

Fig. 3 is the sectional view of the seal cap briquetting of the utility model puncture outfit；

Fig. 4 is C portion enlarged drawing in Fig. 3；

Fig. 5 is the sectional view of the puncture cannula of the utility model puncture outfit；

Fig. 6 is the sectional view of the seal of the utility model puncture outfit；

Fig. 7 is the structural representation at a visual angle of the seal of the utility model puncture outfit；

Fig. 8 is the structural representation at another visual angle of the seal of the utility model puncture outfit；

Fig. 9 is the sectional view when seal cap of embodiment 1 is connected with puncture cannula；

Figure 10 is part A enlarged drawing in Fig. 9；

Figure 11 is the sectional view when seal cap of embodiment 2 is connected with puncture cannula；

Figure 12 is part B enlarged drawing in Figure 11；

In Fig. 1-Figure 12, reference and its corresponding component names are as follows：

1. puncture awl；11. puncture core bar；2. seal cap；21. seal cap shell；22. seal cap briquetting；23. seal cap pressure Block is raised；231. raised outer walls；232. convex inner walls；233. raised bottom surfaces；24. seal cap buckle；3. puncture cannula；31. wear Pierce sleeve shell；311. lip ring mounting grooves；32. seal；33. seal convexity；34. sealing flap is raised；35. annular is fixed Position circle；351. curved flanges；36. sealing flap；37. sealed cylinder；38. reinforcement；39. neck.

Embodiment

Specific embodiment of the present utility model is described in detail below, it should be appreciated that described herein Embodiment is merely to illustrate and explained the utility model, is not limited to the utility model.

Puncture outfit of the present utility model includes puncture awl 1, seal cap 2 and puncture cannula 3, and puncture awl 1 is through seal cap 2 With puncture cannula 3, seal cap 2 is connected with puncture cannula 3；Seal cap 2 is provided with seal cap briquetting 22, is set on seal cap briquetting 22 There is seal cap briquetting projection 23；Puncture cannula 3 is provided with seal 32, and seal 32 is provided with seal convexity 33；The He of seal cap 2 When puncture cannula 3 is connected, seal cap briquetting projection 23 and the linear contact lay of seal convexity 33, so as to play sealing function.

Puncture outfit is used in minimally invasive endoscopic surgery puncture stomach wall, and passes in and out abdomen from the external world as endoscope and operating theater instruments The passage of chamber.Puncture outfit includes puncture awl 1, seal cap 2 and puncture cannula 3, and puncture cannula 3 is other operating theater instruments disengaging patient Internal passage, seal cap 2 is arranged on to connect puncture awl 1 and puncture cannula 3 on puncture cannula 3, and plays sealing function, Puncture awl 1 is through the vertebral body structure in seal cap 2 and puncture cannula 3, and the front end of puncture awl 1, which is provided with, punctures core bar 11, to wear Pierce patient's stomach wall.

The seal cap 2 of puncture outfit is provided with seal cap briquetting 22, and seal cap briquetting 22 is provided with seal cap briquetting projection 23； Puncture cannula 3 is provided with seal 32, and seal 32 is provided with seal convexity 33；It is close when seal cap 2 is connected with puncture cannula 3 Sealing cap briquetting projection 23 and the linear contact lay of seal convexity 33.It is by seal cap briquetting projection 23 between seal cap 2 and puncture cannula 3 Linear contact lay between seal convexity 33 realizes sealing function, and linear contact lay can reduce seal cap briquetting projection 23 and sealing Contact area between projection 33, so as to reduce the flat of the contact surface between seal cap briquetting projection 23 and seal convexity 33 Whole degree requires, and then can simplify seal cap 2 and the production technology of puncture cannula 3, reduces production cost.Seal cap briquetting is raised Linear contact lay between 23 and seal convexity 33 so that seal 32 is diminished by the crushing strength of seal cap briquetting projection 23 so that Small deformation occurs for seal 32, so that medical personnel can complete the company of seal cap 2 and puncture cannula 3 with one-handed performance Connect, and then make it that installation operation is more laborsaving, reduce labor intensity；Meanwhile the deformation quantity of seal 32 is small, seal 32 is not variable Shape, so as to optimize sealing effectiveness.

As shown in Figure 1 and Figure 5, puncture cannula 3 includes puncture cannula shell 31, and puncture cannula shell 31 is opened with upper end Mouthful, seal 32 is arranged on the inside of the upper end open of puncture cannula shell 31, the upper end open of puncture cannula shell 31 it is upper Surface is provided with multiple necks 39.

As shown in Figure 1-Figure 3, seal cap 2 includes seal cap shell 21, and seal cap briquetting 22 is arranged on seal cap shell 21 Lower section, the lower section of seal cap briquetting 22 is provided with multiple seal cap buckles 24；Multiple seal cap buckles 24 are buckled in multiple respectively In neck 39 so that seal cap 2 is connected with puncture cannula 3.

As preferred embodiment, multiple necks 39 are arranged on the upper of the upper end open of puncture cannula shell 31 at equal intervals Surface；Multiple seal cap buckles 24 are arranged on the lower section of seal cap shell 21 at equal intervals, multiple seal cap buckles 24 respectively with it is more Individual neck 39 is corresponding；Seal cap 2 and puncture cannula 3 are entered by the buckle between multiple seal cap buckles 24 and multiple necks 39 Row is detachably connected, so as to be easy to the assembly and disassembly of seal cap 2 and puncture cannula 3.

As shown in Figure 5-Figure 8, seal 32 includes sealed cylinder 37, and there is sealed cylinder 37 upper end open and lower end to open Mouthful；Seal 32 includes multiple sealing flaps 36, the upper end of any sealing flap 36 and the edge phase of the lower ending opening of sealed cylinder 37 Smooth connection, the lower edge of multiple sealing flaps 36 abut；The top surface of sealing flap 36 is provided with sealing flap projection 34, sealing flap 36 bottom surface is provided with reinforcement 38；The outward flange of the upper end open of sealed cylinder 37 is provided with ring positioning ring 35.

The quantity of sealing flap 36 can be two, and now, two sealing flaps 36 are symmetrical arranged；The quantity of sealing flap 36 may be used also Think four, now, the lower edge of four sealing flaps 36 abuts, and the lower edge of four sealing flaps 36 is in cross Type.It should be noted that the quantity of sealing flap 36 can be set greater than four as needed, it is preferable that multiple sealing flaps 36 It is symmetrical arranged, herein without illustrating.

For the ease of the automatic closure of multiple sealing flaps 36, and good sealing is formed, any sealing flap 36 has top surface The bottom surface opposite with top surface, wherein, the upper end open of top surface towards sealed cylinder 37 is set, in bottom surface formation and abdominal cavity of patients The acting surface that the gas of perfusion is acted on.Bottom surface is the curved surface of indent, the curved surface by floor design for indent, with respect to plane Speech, the force-bearing surfaces product of bottom surface is increased, so as to which when puncturing the extraction patient's stomach wall of core bar 11, bottom surface can be by bigger work Firmly, under the active force, be advantageous to the closure of sealing flap 36, and form good sealing；Meanwhile by floor design it is indent Curved surface, can cause sealing flap 36 apparatus extraction after restore to the original state rapidly, effectively prevent the generation of leakage problem.

The top surface of sealing flap 36 is provided with sealing flap projection 34, and sealing flap projection 34 can improve the intensity and bullet of sealing flap 36 Property restoring force, be advantageous to the closure of sealing flap 36, so can avoid puncture core bar 11 extract patient's stomach wall when, sealing flap 36 with Puncture core bar 11 to turn down and the phenomenon that leaks air；Sealing flap projection 34 can play a protective role to sealing flap 36, because, when When the tip of puncture core bar 11 passes through, it can be contacted first with sealing flap projection 34, so as to avoid causing brokenly sealing flap 36 It is bad.Sealing flap projection 34 extends to the lower end of the top surface of sealing flap 36 from the upper end of the top surface of sealing flap 36；Preferably, sealing flap The thickness of projection 34 from top to bottom, is first gradually reduced, then gradually increase, is finally gradually reduced；It is arranged such so that sealing flap is convex It is smaller to play the angle formed between 34, is advantageous to being protected to sealing flap 36；Because if between sealing flap projection 34 If angle is larger, the tip for being unfavorable for puncturing core bar 11 is in contact with sealing flap projection 34 first；Wherein, sealing flap projection 34 Part is located at the intermediate region of the top surface of sealing flap 36 corresponding to maximum thickness.

The bottom surface of sealing flap 36 is provided with reinforcement 38, and reinforcement 38 can improve the intensity and elastic recovery of sealing flap 36 When power, being advantageous to the closure of sealing flap 36, and then can avoid puncturing the extraction of core bar 11, sealing flap 36 is turned over puncture core bar 11 Roll over and the phenomenon that leaks air.

Ring positioning ring 35 can be used for installation of the seal 32 on puncture cannula 3 and fix, the week of ring positioning ring 35 At least two curved flanges 351 for being uniformly distributed setting are provided with to edge, curved flanges 351 and ring positioning ring 35 are integral type Structure.Ring positioning ring 35 can be in order to seal 32 on puncture cannula 3 installation fix so that seal 32 is not easy circumference Rotate.Lip ring mounting groove 311 is provided with the inwall of the upper end open of the puncture cannula shell 31 of puncture cannula 3, will The ring positioning ring 35 of seal 32 is pressed into the lip ring mounting groove 311 of puncture cannula 3, can realize seal 32 Installation.

As preferred embodiment, seal 32 is integrally formed by mould, can strengthen sealing effectiveness.Seal 32 It can be made up of medical grade rubber, silica gel or TPE elastomeric materials so that seal 32 has good elasticity, can be repeatedly Opening and closing.

As shown in Fig. 5-Fig. 6, seal convexity 33 is arranged at the upper end open of sealed cylinder 37, the upper end of seal convexity 33 Provided with sealing inclined plane 331, sealing inclined plane 331 is set towards the inside of sealed cylinder 37, seals the inclination angle of inclined plane 331 For acute angle.The α in the inclination angle corresponding diagram 6 of inclined plane 331 is sealed, α is acute angle.

As shown in figs 2-4, seal cap briquetting projection 23 is arranged on the lower section of seal cap briquetting 22, and seal cap briquetting is raised The angle of 23 outer is right angle.

Seal cap briquetting projection 23 includes raised outer wall 231, convex inner walls 232 and raised bottom surface 233, and seal cap briquetting is convex The angle for playing 23 outer is right angle, i.e., the angle of raised outer wall 231 and raised bottom surface 233 is right angle, i.e., the raised He of outer wall 231 Raised bottom surface 233 is perpendicular.

Embodiment 1

As shown in Figure 9 and Figure 10, the external diameter of seal cap briquetting projection 23 is less than the external diameter of sealing inclined plane 331, and is more than Seal the internal diameter of inclined plane 331 so that when seal cap 2 is connected with puncture cannula 3, the outer of seal cap briquetting projection 23 is resisted against Seal in inclined plane 331, so that seal cap briquetting projection 23 and the linear contact lay of seal convexity 33, so as to play sealing function.

The external diameter of seal cap briquetting projection 23 is the diameter corresponding to the raised outer wall 231 of seal cap briquetting projection 23, right Answer the E in Fig. 3；The F in the external diameter corresponding diagram 6 of inclined plane 331 is sealed, seals the f in the internal diameter corresponding diagram 6 of inclined plane 331.

Embodiment 2

As is illustrated by figs. 11 and 12, the external diameter of seal cap briquetting projection 23 is more than the external diameter of sealing inclined plane 331, seal cap The internal diameter of briquetting projection 23 is less than the internal diameter of sealing inclined plane 331；When seal cap 2 is connected with puncture cannula 3, inclined plane is sealed 331 inclination angle is resisted against on the raised bottom surface 233 of seal cap briquetting projection 23 so that seal cap briquetting projection 23 and sealing are convex 33 linear contact lays are played, so as to play sealing function.

E in the external diameter corresponding diagram 3 of seal cap briquetting projection 23, the internal diameter of seal cap briquetting projection 23 is seal cap briquetting Diameter corresponding to the convex inner walls 233 of projection 23, the e in corresponding diagram 3；The F in the external diameter corresponding diagram 6 of inclined plane 331 is sealed, Seal the f in the internal diameter corresponding diagram 6 of inclined plane 331.

Above example is only illustrating the technical solution of the utility model, rather than is limited；Although with reference to before Embodiment is stated the utility model is described in detail, for the person of ordinary skill of the art, still can be right Technical scheme described in previous embodiment is modified, or carries out equivalent substitution to which part technical characteristic；And these Modifications or substitutions, do not make appropriate technical solution essence depart from the utility model technical scheme claimed spirit and Scope.

Claims (9)

1. a kind of puncture outfit, including puncture awl, seal cap and puncture cannula, the puncture awl is through the seal cap and described Puncture cannula, the seal cap are connected with the puncture cannula；Characterized in that,

The seal cap is provided with seal cap briquetting, and it is raised that the seal cap briquetting is provided with seal cap briquetting；

The puncture cannula is provided with seal, and the seal is provided with seal convexity；

When the seal cap is connected with the puncture cannula, the raised and described seal convexity linear contact lay of the seal cap briquetting, from And play sealing function.

2. puncture outfit as claimed in claim 1, it is characterised in that

The seal includes sealed cylinder, and the sealed cylinder has upper end open and lower ending opening；

The seal convexity is arranged at the upper end open of the sealed cylinder, and the upper end of the seal convexity is provided with sealing and tilted Face, the sealing inclined plane are set towards the inside of the sealed cylinder, and the inclination angle of the sealing inclined plane is acute angle.

3. puncture outfit as claimed in claim 2, it is characterised in that

The seal cap briquetting projection is arranged on the lower section of the seal cap briquetting, the folder of the raised outer of the seal cap briquetting Angle is right angle.

4. puncture outfit as claimed in claim 3, it is characterised in that

The raised external diameter of the seal cap briquetting is less than the external diameter of the sealing inclined plane, and interior more than the sealing inclined plane Footpath；

When the seal cap is connected with the puncture cannula, the raised outer of the seal cap briquetting is resisted against the sealing and tilted On face so that the raised and described seal convexity linear contact lay of the seal cap briquetting.

5. puncture outfit as claimed in claim 3, it is characterised in that

The raised external diameter of the seal cap briquetting is more than the external diameter of the sealing inclined plane, the raised internal diameter of the seal cap briquetting Less than the internal diameter of the sealing inclined plane；

When the seal cap is connected with the puncture cannula, the inclination angle of the sealing inclined plane is resisted against the seal cap briquetting On raised bottom surface so that the raised and described seal convexity linear contact lay of the seal cap briquetting.

6. puncture outfit as claimed in claim 1, it is characterised in that

The puncture cannula includes puncture cannula shell, and the puncture cannula shell has upper end open, and the seal is set In the inside of the upper end open of the puncture cannula shell, the upper surface of the upper end open of the puncture cannula shell is provided with multiple Neck.

7. puncture outfit as claimed in claim 6, it is characterised in that

The seal cap includes seal cap shell, and the seal cap briquetting is arranged on the lower section of the seal cap shell, described close The lower section of sealing cap briquetting is provided with multiple seal cap buckles；The multiple seal cap buckle is buckled in the multiple neck respectively, So that the seal cap is connected with the puncture cannula.

8. puncture outfit as claimed in claim 2, it is characterised in that

The seal also includes multiple sealing flaps, the upper end of any sealing flap and the lower ending opening of the sealed cylinder Edge is mutually in smoothing junction, and the lower edge of the multiple sealing flap abuts；

The top surface of the sealing flap is provided with projection, and the bottom surface of the sealing flap is equipped with reinforcement；The upper end of the sealed cylinder The outward flange of opening is provided with ring positioning ring.

9. puncture outfit as claimed in claim 1, it is characterised in that

The seal is integrally formed by mould.