CN209529230U - Hooking needle assemblies - Google Patents

Abstract

The utility model provides a kind of hooking needle assemblies, wherein hooking needle assemblies include hooking needle shell and an at least hooking needle, the hooking needle shell includes first shell and second shell, the first shell and second shell are detachably connected, the hooking needle is removable installed between the first shell and second shell, and the distal end of the hooking needle can be protruding from the distal end of the hooking needle shell.The utility model provides a kind of hooking needle assemblies, after line style stapler is closed tissue, can be taken in cat ear in stump using the hooking needle assemblies, to remove cat ear when subsequent identical；Simultaneously because the shell of the hooking needle assemblies is dismountable and hooking needle is to be removable installed in that shell is intracorporal, replaces the hooking needle in hooking needle shell with can be convenient, realize the recycling of hooking needle shell.

Description

Hooking needle assemblies

Technical field

The utility model relates to the field of medical instrument technology, and in particular to a kind of hooking needle assemblies.

Background technique

Disease of digestive tract is high-incidence one of the disease of the mankind, over the course for the treatment of, is often used the hand that stapler replaces doctor Work operation carries out the physiological tissues such as alimentary canal identical.In the course of surgery, linear anastomat or camber line are generally first used Shape is by engaging tissue and cutting, and after linear anastomat or arc line type Anastomat hemorrhoidal circumcision tissue, the concordant profipole of formation is linear , it will form two wedge angles at the both ends of concordant profipole and be commonly called as cat ear.It, can be significantly after operation if do not handled cat ear Increase the risk of anastomotic leakage, it is very unfavorable to patient.

Utility model content

For the problems of the prior art, the purpose of this utility model is to provide a kind of hooking needle assemblies, in linear type After stapler or arc line shaped Anastomat hemorrhoidal circumcision tissue, cat ear can be taken in stump, to be gone when subsequent identical Except cat ear, and it can be convenient replacement hooking needle.

The utility model embodiment provides a kind of hooking needle assemblies, including hooking needle shell and an at least hooking needle, described Hooking needle shell includes first shell and second shell, and the first shell and second shell are detachably connected, the hooking needle It is removable installed between the first shell and second shell, and the distal end of the hooking needle can be from the hooking needle shell Distal end it is protruding.

Optionally, the medial surface of the first shell and second shell is respectively arranged with one-to-one with the hooking needle Open trough, when the first shell and the second shell are closed, the open trough of the first shell is respectively with described the The open troughs of two shells is closed, formed with the one-to-one hooking needle tray of the hooking needle, the hooking needle be set to pair In the hooking needle tray answered.

It optionally, further include a fixing piece, the medial surface of the first shell is provided with the first fixing groove, the second shell The body position opposite with first fixing groove offers fixation hole, the fixing piece from the fixation hole pass through after described in insertion In first fixing groove.

Optionally, the fixing piece and first fixing groove are interference fit.

Optionally, it is cambered surface that the fixing piece, which is inserted into the end face of the end of first fixing groove,.

Optionally, the lateral surface of the second shell is also provided with the second fixing groove being connected with the fixation hole, institute Stating fixing piece includes the first fixing piece and the second fixing piece, and first fixing piece includes first end and second end, and described first The first end of fixing piece is inserted into first fixing groove, and the second end of first fixing piece is connected with second fixing piece It connects, second fixing piece is embedded in second fixing groove.

Optionally, first fixing piece and the second fixing piece are rotatably attached.

Optionally, second fixing groove is along the axially extending of the hooking needle shell.

Optionally, second fixing groove includes first end and second end, the first end of second fixing groove with it is described Fixation hole is connected, and the second end of second fixing groove extends to the proximal end face of the second shell.

Optionally, second fixing piece includes first end and second end, the first end of second fixing piece with it is described First fixing piece is connected, and the second end of second end from second fixing groove of second fixing piece is protruding.

Optionally, the hooking needle includes the syringe needle proximally set gradually from hooking needle distal and launched portion, described to push away The proximal end in portion is stretched out except the proximal end of the hooking needle shell out, and return unit is provided in the launched portion, applies external force extremely When the launched portion releases the syringe needle from the distal end of the hooking needle shell, the return unit is deformed, the release When the external force in portion is eliminated, the recoverable force power of the return unit makes the syringe needle be back to the inside of the hooking needle shell.

Optionally, the return unit is pressure spring, and hooking needle shell position corresponding with the distal end of the pressure spring is arranged There is stage portion, the stage portion limits the shift position of the distal end of the pressure spring；

The distal end of the pressure spring is additionally provided with stop part, and the stop part is fixed on the hooking needle, the stop part Positioned at the proximal lateral of the stage portion, and the stop part and the stage portion are inconsistent, to limit the distal end of the pressure spring Shift position.

Optionally, interconnecting piece is additionally provided between the syringe needle and launched portion of the hooking needle, the interconnecting piece is flexible connects Socket part.

Optionally, the interconnecting piece includes multiple connection sheets arranged side by side.

Optionally, the medial surface of the first shell is provided at least one first auxiliary section, the inside of the second shell Face is provided with and one-to-one second auxiliary section in first auxiliary section, first auxiliary section and the second corresponding cooperation Portion is detachably connected.

Optionally, first auxiliary section is protrusion, and second auxiliary section is groove or first auxiliary section is recessed Slot, second auxiliary section are protrusion.

Optionally, the protrusion and the groove are interference fit.

Optionally, first auxiliary section and the second auxiliary section are hook pair or thread gluing pair.

Optionally, the first shell includes the first shell head positioned at first shell distal end, the first shell and Setting is there are two hooking needle between second shell, and the hooking needle includes the syringe needle positioned at hooking needle distal, and the syringe needle can be from The distal end of the hooking needle shell is protruding, and the stretching direction of the syringe needle of described two hooking needles is relative to the hooking needle The axial direction of shell is respectively facing two opposite direction deflections；The first shell head is located between the syringe needle of two hooking needles Position be provided at least one first auxiliary section.

Optionally, the first shell further includes positioned at the first shell tail portion of first shell proximal end, and the hooking needle is also Launched portion including being located at hooking needle proximal end and the interconnecting piece between launched portion and syringe needle, the connection of described two hooking needles Portion is set parallel to each other in the first shell tail portion, and the first shell tail portion is corresponding with two outsides of the interconnecting piece Position is respectively arranged at least one first auxiliary section.

Optionally, the hooking needle shell includes the housing head positioned at hooking needle housing distal, and the housing head is The big small pyramidal structure in proximal end in distal end.

Hooking needle assemblies provided by the utility model have the advantages that

The utility model provides a kind of hooking needle assemblies, after line style stapler is closed tissue, can use the hook Line needle assemblies take in cat ear in stump, to remove cat ear when subsequent identical；Simultaneously because the hooking needle assemblies Shell is dismountable and hooking needle is to be removable installed in that shell is intracorporal, replaces the hook in hooking needle shell with can be convenient Line needle realizes the recycling of hooking needle shell；In addition, the hooking needle of the utility model is not limited to coincide to linear anastomat Tissue afterwards is handled, and the closure mouth using other modes suture tissue can be applicable in.

Detailed description of the invention

Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model Sign, objects and advantages will become more apparent upon.

Fig. 1 is the perspective view of the hooking needle assemblies of an embodiment of the present invention；

Fig. 2 and Fig. 3 is the schematic diagram of the first shell of an embodiment of the present invention；

Fig. 4 and Fig. 5 is the schematic diagram of the second shell of an embodiment of the present invention；

The structural schematic diagram of hooking needle assemblies when Fig. 6 is the fixing piece insertion of an embodiment of the present invention；

Form schematic diagram when Fig. 7 is the fixing piece insertion of an embodiment of the present invention；

Fig. 8 is the form schematic diagram after the fixing piece insertion of an embodiment of the present invention；

Fig. 9 is the first shell of an embodiment of the present invention and the schematic diagram of second shell cooperation；

Figure 10 is that the hooking needle assemblies of an embodiment of the present invention remove the structural schematic diagram of a side body；

Figure 11 is the structural schematic diagram of the hooking needle of an embodiment of the present invention；

Figure 12 is the front view of the hooking needle assemblies of an embodiment of the present invention；

Figure 13 is the schematic diagram that the first hooking needle is released in the hooking needle assemblies of an embodiment of the present invention；

Figure 14 is the schematic diagram that two hooking needles are released in the hooking needle assemblies of an embodiment of the present invention.

Appended drawing reference:

The launched portion of 1 hooking needle shell, 23 first hooking needle

11 housing head, 231 first hooking needle pushes away foot

The return unit of 111 housing heads distal end, 24 first hooking needles

The stop part of 112 housing head proximal end, 25 first hooking needle

12 shell tail portion, 3 second hooking needle

The syringe needle of 13 hooking needle tray, 31 second hooking needle

The interconnecting piece of 14 stage portion, 32 second hooking needle

The launched portion of 18 first shell, 33 second hooking needle

181 first auxiliary section, 4 fixing piece

182 first fixing groove, 41 first fixing piece

The first end of 19 second shell, 411 first fixing piece

The second end of 191 second auxiliary section, 412 first fixing piece

192 fixation hole, 42 second fixing piece

The first end of 193 second fixing groove, 421 second fixing piece

The second end of 2 first hooking needle, 422 second fixing piece

43 fixed pin of syringe needle of 21 first hooking needles

The interconnecting piece of 22 first hooking needles

Specific embodiment

Example embodiment is more specifically described with reference to the drawings.However, example embodiment can be with a variety of shapes Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that this is practical new Type will be full and complete, and the design of example embodiment is comprehensively communicated to those skilled in the art.It is identical in figure Appended drawing reference indicate same or similar structure, thus repetition thereof will be omitted.

The technical issues of in order to solve in the prior art, the utility model provide a kind of hooking needle assemblies, the hooking Needle assemblies include hooking needle shell and an at least hooking needle, and the hooking needle shell includes first shell and second shell, described First shell and second shell are detachably connected, the hooking needle be removable installed in the first shell and second shell it Between, and the distal end of the hooking needle can be protruding from the distal end of the hooking needle shell, can also return again along the path of stretching Return hooking needle shell.

It in the present invention, is proximally and distally to be apart from the closer one end of operator for operator Proximal end is distal end closer to one end of surgery location apart from the farther away one end of operator.In hooking needle assemblies, inside with Outside is that the side relatively and for the axle center of hooking needle shell, close to axle center is inside, and the side far from axle center is outside.

In the surgical procedure of disease of digestive tract, after using line style stapler closure tissue, the hooking can be used Needle assemblies take in cat ear in stump, to remove cat ear when subsequent identical.When in use, hooking needle assemblies are inserted into To operative site, syringe needle is released from the distal end of hooking needle shell then, pocket is punctured, catches on purse wire, then pass through pocket Cat ear is drawn in stump by line, then is cut off the concordant profipole of stump together with cat ear using instruments such as circular-pipe anastomats, finally A smooth annular previous anastomotic is formed, to reduce the generation of anastomotic leakage.Since the shell of the hooking needle assemblies is removable Unload and hooking needle is to be removable installed in that shell is intracorporal, replaces the hooking needle in hooking needle shell with can be convenient, and is realized The recycling of hooking needle shell.

Above-mentioned described surgical procedure is merely illustrative, in actual operation, used before the insertion of hooking needle assemblies The method of suture tissue is not limited to using linear anastomat, and cat ear is drawn in after stump and cuts off cat ear by hooking needle assemblies Method be also not necessarily limited to using circular-pipe anastomat.It is used for the hooking needle of the utility model to catch on purse wire in other occasions equal It is possible, belongs within the protection scope of the utility model.

With reference to the accompanying drawing 1~14 be further described an embodiment of the present invention hooking needle assemblies structure.

As shown in Fig. 1~5, the utility model provides a kind of hooking needle assemblies, and the hooking needle assemblies include hooking needle Shell 1 and the hooking needle in the hooking needle shell 1.The quantity of hooking needle can according to need setting, in the implementation In example, there are two the settings of hooking needle: the first hooking needle 2 and the second hooking needle 3, but the utility model is without being limited thereto.Hooking needle shell Body 1 is formed by that opposite can open with relatively closed first shell 18 and second shell 19.Hooking needle is removably disposed in Between one shell 18 and second shell 19, and the distal end of hooking needle can be protruding from the distal end of hooking needle shell 1.First shell The structure of body 18 is shown by Fig. 2 and Fig. 3, and the structure of second shell 19 is shown by Fig. 4 and Fig. 5.

In this embodiment, in this embodiment, the medial surface of the first shell 18 and second shell 19 is opposite respectively Open trough there are two being arranged with answering, when the first shell 18 is closed with the second shell 19, the first shell 18 Two open troughs are closed with the open trough of the second shell 19 respectively, form two hooking needle trays 13, and described first hooks Line needle 2 and the second hooking needle 3 are respectively arranged in described two hooking needle trays 13.When the quantity of hooking needle changes, hooking needle The quantity of slot 13 also changes correspondingly, and to correspond with hooking needle, and the medial surface of first shell 18 and second shell 19 is set The quantity for the open trough set also changes correspondingly.

In this embodiment, the medial surface of the first shell 18 is provided with the first auxiliary section 181, second shell 19 it is interior Side is provided with and one-to-one second auxiliary section 191 in the first auxiliary section 181.First auxiliary section and corresponding second Auxiliary section is detachably connected.Such as Fig. 9 and Figure 10, in this embodiment, the first auxiliary section 181 is groove, the second auxiliary section 191 It is convex block, and convex block and groove are preferably interference fitted.But the utility model is without being limited thereto, and the first auxiliary section can also use convex Block, the second auxiliary section are corresponding groove, the first auxiliary section and the second auxiliary section can also using buckle to, thread gluing to etc., To prevent the first shell 18 and the relative motion in 19 axial direction of second shell.

In this embodiment, first shell 18 and second shell 19 are also fixed by fixing piece 4.Specifically, such as Fig. 6 Shown in~Fig. 9, the structure that fixing piece 4 and hooking needle shell 1 cooperate in the embodiment is shown.

As shown in fig. 6, in this embodiment, the hooking needle assemblies further include a fixing piece 4, the first shell 18 Medial surface is provided with the first fixing groove 182, and the second shell 19 position opposite with first fixing groove 182 offers solid Determine hole 192, the fixing piece 4 is inserted into first fixing groove 182 after passing through from the fixation hole 192.First fixing groove 182 It can be a blind hole, be also possible to the through-hole for penetrating the side wall of first shell 18.The fixing piece 4 is consolidated with described first Determine slot 182 to be preferably interference fitted, and the end face of the end of insertion first fixing groove 182 of the fixing piece 4 is guidance The first fixing groove 182 is inserted into the end of guide fixture 4 in face, such as cambered surface or the conical surface etc..

In this embodiment, further, the lateral surface of the second shell 19 is also provided with and 192 phase of fixation hole Second fixing groove 193 of connection, the fixing piece 4 include the first fixing piece 41 and the second fixing piece 42, first fixing piece 41 include first end 411 and second end 412, and second fixing piece 42 includes first end 421 and second end 422.Described first The first end 411 of fixing piece 41 is inserted into first fixing groove 182, the second end 412 of first fixing piece 41 with it is described The first end 421 of second fixing piece 42 is connected, and second fixing piece 42 is embedded in second fixing groove 422.

In this embodiment, first fixing piece 41 and the second fixing piece 42 are rotatably attached.Specifically, Ke Yitong A pin 43 is crossed to be rotatably connected.As shown in Figure 6 and Figure 7, when fixing piece 4 is inserted into hooking needle shell 1, the first fixing piece 41 and second fixing piece 42 substantially point-blank, it is fixed the first end 411 of the first fixing piece 41 is being inserted into first After in slot 182, the second fixing piece 42 is rotated down in the second fixing groove 422 of insertion, at this point, the first fixing piece 41 and the The structures of two fixing pieces 42 as shown in figure 8, be L-shaped structure, fixing piece 4 be fixed in hooking needle shell 1 after structure such as Fig. 9 It is shown.But the utility model is without being limited thereto.First fixing piece 41 and the second fixing piece 42 may be set to be and can not mutually rotate Be fixedly connected, that is, be fixed as L-shaped structure, be directly inserted into hooking needle shell 1 with L-shaped structure.

In this embodiment, the second fixing groove 193 extends along the axial direction of hooking needle shell 1, but the utility model is not It is limited to this.Second fixing groove 193 include first end and second end, the first end of second fixing groove 193 with it is described solid Determine hole 192 to be connected, the second end of second fixing groove 193 extends to the proximal end face of the second shell 19；Described second The second end of the second end 422 of fixing piece 42 from second fixing groove 193 is protruding, and operator is facilitated to dismantle hooking needle shell Body 1.When operator needs replacing hooking needle 2,3 in hooking needle shell 1, the second end of the second fixing piece 42 can be held first 422, pull out, be drawn out to the second fixing piece 42 and the first fixing piece 41 substantially point-blank after, by fixing piece 4 It is whole to be pulled out from hooking needle shell 1, then apply the coordinate force overcome between the first auxiliary section 181 and the second auxiliary section 191 External force first shell 18 and second shell 19 are separated.Then hooking needle 2,3 is directly taken out.Then, operator will be new Hooking needle is put into hooking needle tray 13, then first shell 18 and second shell 19 are aligned, by fixing piece 4 in Fig. 6 Posture is inserted into the first fixing groove 182, and the first end 421 by the second fixing piece 42 around the second fixing piece 42 is rotated to second Fixing piece 42 is embedded in the second fixing groove 193, that is, completes the replacement of hooking needle in hooking needle assemblies.Entire hooking needle assemblies exist The stability of structure is very high after combination, and installation and removal are quite convenient to.

The arrangement in the housing of hooking needle used by the utility model and hook are specifically introduced below with reference to Figure 10~14 The structure of line needle.

When using the previous anastomotic of hooking needle assemblies processing linear anastomat, since the concordant profipole of linear anastomat is Linear, rather than the pocket of boundling, setting is there are two hooking needle 2,3 in the hooking needle assemblies of the utility model, and two hooks Line needle 2,3 stretches out hooking needle shell in two different directions respectively, forms the hooking structure expanded outwardly, can be in concordant profipole Initial point position cat ear is drawn in into stump, reduce the generation of fistula.

The composition of two hooking needles 2,3 is basically the same, is all by the syringe needle of distal end, the interconnecting piece at middle part and proximal end Launched portion composition, syringe needle in reversed acanthoid and be equipped with proximally facing direction hook portion.Specifically, the first hooking needle 2 includes syringe needle 21, interconnecting piece 22 and launched portion 23, the second hooking needle 3 include syringe needle 31, interconnecting piece 32 and launched portion 33.The syringe needle 21,31 Can be protruding from the distal end of the hooking needle shell 1, it, can also after syringe needle 21 and 31 is stretched out from the distal end of hooking needle shell 1 To return again to hooking needle shell 1 along the path stretched out, and between the stretching direction of the syringe needle 21,31 of described two hooking needles 2,3 With an angle, i.e., the syringe needle 21,31 of two hooking needles 2,3 stretches out respectively to two directions with certain angle.

It is understood that the syringe needle 21,31 of hooking needle 2,3 be it is sharp, operator may be damaged, or The tissue on periphery is caused to damage when the hooking needle 2,3 enters tissue, therefore, the hooking needle in the initial state 2,3 syringe needle 21,31 is located in shell.

In this embodiment, the stretching direction of the syringe needle 21,31 of described two hooking needles 2,3 is relative to the hooking needle shell The axial direction of body 1 is respectively facing two opposite direction deflections.As shown in figure 14, the syringe needle 21 of the first hooking needle 2 is stretched along the direction A1 Out and retraction, the syringe needle 31 of the second hooking needle 3 are extended and retracted along the direction A2.The syringe needle 21 of first hooking needle 2 is relative to hooking The axial S of needle shell 1 is deflected along the direction B1, the syringe needle 31 of the second hooking needle 3 relative to hooking needle shell 1 axial S along the side B2 To deflection, and the syringe needle 21 of the first hooking needle 2 stretch out direction, the second hooking needle 3 syringe needle 31 stretching direction and hooking The axis of needle shell 1 is preferably in the same plane.In operation of low rectal carcinoma, linear anastomat or arc line type concordant profipole It is all greater than human anus pipe diameter, and the syringe needle 31 of the syringe needle 21 of the first hooking needle 2 and the second hooking needle 3 is stretched out to distal end When, it expands outwardly, preferably can draw in by cat ear in the initial point position of concordant profipole, reduce the generation of fistula.From As can be seen that in this embodiment, the angle between A1 and S is equal to the angle between A2 and S, the first hooking needle 2 in Figure 14 The syringe needle 31 of syringe needle 21 and the second hooking needle 3 can symmetrically be stretched out from the distal end of hooking needle shell 1.But the utility model not with This is limited, the angle between A1 and S can not equal to angle between A2 and S, can also with there are an angles between A1 and S, and A2 is parallel to S or A1 is parallel to S, there are angle etc. between A2 and S, belong to the protection scope of the utility model it It is interior.

In this embodiment, as shown in figure 12, the hooking needle shell 1 includes the shell positioned at 1 distal end of hooking needle shell Head 11 and shell tail portion 12 positioned at 1 proximal end of hooking needle shell.It is described in order to adapt to the structure of the tubular tissues such as human body intestinal canal The cross section of the shell of hooking needle is adaptively rounded to be fitted with what is be more bonded with tissue.Therefore distal end housing outer diameter The outer diameter of the nail bin groupware of similar circular-pipe anastomat can also be equipped with different outer diameters, example according to the difference of tissue Such as: 33 millimeters, 29 millimeters, 25 millimeters.The housing head 11 be the small conical structure in 111 big proximal ends 112 of distal end so that Proximal diameter is less than the diameter of human body tubular tissue.The diameter of the housing head 11 of hooking needle shell 1 is from distally proximally gradually It reduces.In operation of low rectal carcinoma, after housing head 11 enters anus, since the diameter of housing head 11 is gradually reduced, no Lasting expansion can be caused to sphincter, and reduces the damage to sphincter function.

As shown in Figure 10 and Figure 11, the proximal end of the launched portion 23 of the first hooking needle 2 is provided with one and pushes away foot 231, pushes away Foot 231 stretches out except the proximal end of the hooking needle shell 1.Similarly, the proximal end of the launched portion 33 of the second hooking needle 3 is also equipped with One pushes away foot, pushes away foot and stretches out except the proximal end of hooking needle shell 1.In this embodiment, the launched portion 23 of the first hooking needle 2 and The launched portion 33 of two hooking needles 3 is located in parallel to one another.And due to the needle of the syringe needle 21 of the first hooking needle 2 and the second hooking needle 3 First 31 expand outward, and the interconnecting piece 32 of the interconnecting piece 22 of the first hooking needle 2 and the second hooking needle 3 is curved.Therefore, The syringe needle 21,31 and launched portion 23,33 of hooking needle are rigid, and interconnecting piece 22,32 is flexible.

In this embodiment, it is provided with a return unit 24 at the launched portion 23 of the first hooking needle 2, applies external force and is pushed away to described When portion 23 releases the syringe needle 21 from the distal end of the hooking needle shell 1 out, the return unit 24 is deformed, outside application When power is eliminated, the recoverable force power of the return unit 24 makes the syringe needle 21 be back to the inside of the hooking needle shell 1.The A return unit is also equipped at the launched portion 33 of two hooking needles 3, working principle is similar with the first hooking needle 2, herein no longer It repeats.

In addition, the interconnecting piece 22,32 is also possible to respectively include the structure of multiple connection sheets arranged side by side.Each company Contact pin can be sheet metal, plastic tab etc., and each connection sheet Side by side groupings is used together, can not only guarantee to connect Portion 22,32 has certain bent flexibility, can also provide enough connections along longitudinal direction between syringe needle 21 and launched portion 23 Enough bonding strengths along longitudinal direction between intensity and syringe needle 31 and launched portion 33 guarantee to push 23 He of launched portion in operator When launched portion 33, thrust can be transmitted by syringe needle 21,31 by interconnecting piece 22,32, and unclamp launched portion 22,33 in operator When, the reset force of return unit 24 can also be transmitted to syringe needle 21,31 by interconnecting piece 22,32, guarantee the first hooking needle 2 and second The smoothness that hooking needle 3 vertically moves.

The return unit 24 can be pressure spring, the setting of the hooking needle shell 1 position corresponding with the distal end of the pressure spring There is stage portion 14, the stage portion 14 limits the shift position of the distal end of the pressure spring, realizes the positioning of pressure spring, the proximal end of pressure spring It can equally be limited by hooking needle shell 1.The effect of pressure spring, the original of the second hooking needle 3 are introduced by taking the first hooking needle 2 as an example below It manages similar therewith.When in use, operator will push away foot 231 and push to the distal direction of hooking needle shell 1, pushes away foot 231 and passes through company Thrust is transmitted to syringe needle 21 up by socket part 22, and while releasing syringe needle 21 from the distal end of hooking needle shell 1, also compression is pressed Spring, so that pressure spring generates compressive deformation.After syringe needle 21 catches on purse wire, operator, which unclamps, pushes away foot 231, extensive in the deformation of pressure spring Under the action of multiple power, syringe needle 21 is retracted into the inside of hooking needle shell 1 again.The return unit 24 can also be using other knots Recoverable elastic slice, connecting needle 21 and tension spring of hooking needle shell 1 etc., belong to the utility model after structure, such as deformation Protection scope within.

In this embodiment, the distal end of the pressure spring is additionally provided with stop part 25, and the stop part 25 is fixed on described On one hooking needle 2, the stop part 25 is located at the proximal lateral of the stage portion 14, and the distal face of the stop part 25 with it is described The proximal end face of stage portion 14 is inconsistent, is limited with the distal end to pressure spring.Also a backstop can be set on second hooking needle 3 Part, and the corresponding stage portion of stop part in the second hooking needle 3 also can be set in hooking needle shell 1, to the second hooking needle 3 The distal end of reseting pressuring spring is limited.

Since the both ends of the pressure spring 24 of hooking needle 2,3 are respectively arranged with stopper section, pressure spring 24 and hooking needle be it is integrated, It is whole in replacement process to be replaced, carry out the installation of pressure spring 24 and hooking needle 2 again without operator.

In this embodiment, the setting of the first auxiliary section 181 and the second auxiliary section 182 can be according to the row of hooking needle tray 13 Cloth is arranged.Specifically, the position that the housing head of first shell 18 is located between the syringe needle 21,31 of two hooking needles 2,3 is set It is equipped at least one first auxiliary section 181, accordingly, the housing head of second shell 19 is located at the syringe needle of two hooking needles 2,3 21, the position between 31 is provided at least one second auxiliary section 191.The shell tail portion of the first shell 18 with it is described two The corresponding position in two outsides of the interconnecting piece 22,32 of hooking needle 2,3 is respectively arranged at least one first auxiliary section 181, corresponding Ground, the shell tail portion of the second shell 19 position corresponding with two outsides of the interconnecting piece 22,32 of described two hooking needles 2,3 It is respectively arranged at least one second auxiliary section 191.But the utility model is not limited, and the first auxiliary section 181 and second is matched The position in conjunction portion 191 and quantity can according to need selection.First auxiliary section 181 is used for second auxiliary section 182 Limit the relative motion between the first shell 18 and the second shell 19.

Hooking needle assemblies provided by the utility model have the advantage that

The utility model provides a kind of hooking needle assemblies, after line style stapler is closed tissue, can use the hook Line needle assemblies take in cat ear in stump, to remove cat ear when subsequent identical；Simultaneously because the hooking needle assemblies Shell is dismountable and hooking needle is to be removable installed in that shell is intracorporal, replaces the hook in hooking needle shell with can be convenient Line needle realizes the recycling of hooking needle shell；In addition, the hooking needle of the utility model is not limited to coincide to linear anastomat Tissue afterwards is handled, and the closure mouth using other modes suture tissue can be applicable in.

It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard To belong to the protection scope of the utility model.

Claims (21)

1. a kind of hooking needle assemblies, which is characterized in that including hooking needle shell and an at least hooking needle, the hooking needle shell packet First shell and second shell are included, the first shell and second shell are detachably connected, and the hooking needle is removably disposed Between the first shell and second shell, and the distal end of the hooking needle can be from the distal end of the hooking needle shell to overhanging Out.

2. hooking needle assemblies according to claim 1, which is characterized in that the medial surface of the first shell and second shell It is respectively arranged with and the one-to-one open trough of hooking needle, when the first shell and the second shell are closed, institute The open trough for stating first shell is closed with the open trough of the second shell respectively, is formed and is corresponded with the hooking needle Hooking needle tray, the hooking needle is set in corresponding hooking needle tray.

3. hooking needle assemblies according to claim 1, which is characterized in that it further include a fixing piece, the first shell Medial surface is provided with the first fixing groove, and the second shell position opposite with first fixing groove offers fixation hole, institute It states after fixing piece is passed through from the fixation hole and is inserted into first fixing groove.

4. hooking needle assemblies according to claim 3, which is characterized in that the fixing piece and first fixing groove were It is full of cooperation.

5. hooking needle assemblies according to claim 4, which is characterized in that the fixing piece is inserted into first fixing groove The end face of end is cambered surface.

6. hooking needle assemblies according to claim 3, which is characterized in that the lateral surface of the second shell be also provided with The second fixing groove that the fixation hole is connected, the fixing piece include the first fixing piece and the second fixing piece, and described first is solid Determining part includes first end and second end, and the first end of first fixing piece is inserted into first fixing groove, and described first is solid The second end for determining part is connected with second fixing piece, and second fixing piece is embedded in second fixing groove.

7. hooking needle assemblies according to claim 6, which is characterized in that first fixing piece and the second fixing piece can revolve Turn ground connection.

8. hooking needle assemblies according to claim 6, which is characterized in that second fixing groove is along the hooking needle shell It is axially extending.

9. hooking needle assemblies according to claim 6, which is characterized in that second fixing groove includes first end and second End, the first end of second fixing groove are connected with the fixation hole, and the second end of second fixing groove extends to described The proximal end face of second shell.

10. hooking needle assemblies according to claim 9, which is characterized in that second fixing piece includes first end and Two ends, the first end of second fixing piece are connected with first fixing piece, and the second end of second fixing piece is from institute The second end for stating the second fixing groove is protruding.

11. hooking needle assemblies according to claim 10, which is characterized in that the hooking needle include from hooking needle distal to The syringe needle and launched portion that proximal end is set gradually, the proximal end of the launched portion is stretched out except the proximal end of the hooking needle shell, and institute It states and is provided with return unit in launched portion, apply external force and push away the syringe needle from the distal end of the hooking needle shell to the launched portion When out, the return unit is deformed, and when the external force of the launched portion is eliminated, the recoverable force power of the return unit makes described Syringe needle is back to the inside of the hooking needle shell.

12. hooking needle assemblies according to claim 11, which is characterized in that the return unit is pressure spring, the hooking needle Shell position corresponding with the distal end of the pressure spring is provided with stage portion, and the stage portion limits the movement of the distal end of the pressure spring Position；

The distal end of the pressure spring is additionally provided with stop part, and the stop part is fixed on the hooking needle, and the stop part is located at The proximal lateral of the stage portion, and the stop part and the stage portion are inconsistent, to limit the movement of the distal end of the pressure spring Position.

13. hooking needle assemblies according to claim 11, which is characterized in that between the syringe needle and launched portion of the hooking needle It is additionally provided with interconnecting piece, the interconnecting piece is flexible joint.

14. hooking needle assemblies according to claim 13, which is characterized in that the interconnecting piece includes multiple arranged side by side Connection sheet.

15. hooking needle assemblies according to claim 1, which is characterized in that the medial surface of the first shell be provided with to Few one first auxiliary section, the medial surface of the second shell are provided with and one-to-one second cooperation in first auxiliary section Portion, first auxiliary section and the second corresponding auxiliary section are detachably connected.

16. hooking needle assemblies according to claim 15, which is characterized in that first auxiliary section is protrusion, described the Two auxiliary sections are groove or first auxiliary section is groove, and second auxiliary section is protrusion.

17. hooking needle assemblies according to claim 16, which is characterized in that the protrusion is matched with the groove for interference It closes.

18. hooking needle assemblies according to claim 15, which is characterized in that first auxiliary section and the second auxiliary section are Hook pair or thread gluing pair.

19. hooking needle assemblies according to claim 15, which is characterized in that the first shell includes being located at first shell The first shell head of distal end, hooking needle, the hooking needle include there are two settings between the first shell and second shell Positioned at the syringe needle of hooking needle distal, the syringe needle can be protruding from the distal end of the hooking needle shell, and described two hookings The stretching direction of the syringe needle of needle is respectively facing two opposite direction deflections relative to the axial direction of the hooking needle shell；Described The position that one housing head is located between the syringe needle of two hooking needles is provided at least one first auxiliary section.

20. hooking needle assemblies according to claim 19, which is characterized in that the first shell further includes being located at first shell The first shell tail portion of body proximal end, the hooking needle further include positioned at the launched portion of hooking needle proximal end and positioned at launched portion and syringe needle Between interconnecting piece, the interconnecting piece of described two hooking needles is set parallel to each other in the first shell tail portion, and described first Shell tail portion position corresponding with two outsides of the interconnecting piece is respectively arranged at least one first auxiliary section.

21. according to claim 1 to hooking needle assemblies described in any one of 20, which is characterized in that the hooking needle shell packet The housing head positioned at hooking needle housing distal is included, the housing head is the big small conical structure in proximal end in distal end.