CN201019791Y - Nipper type stitching instrument - Google Patents

Abstract

The utility model relates to a tweezers-type suturing clamp which is composed of a needle holder (21), a thread-collecting device (1), a thread box (11) and an elastic holder (12); the needle holder (21) and the thread-collecting device (1) are integrated in the V shape via the elastic holder (12); moreover, the needle holder and the thread-collecting device are opened with V shape through the elastic holder (12).Two end teeth (22) of the needle holder (21) can be locked through a rear end tightening screw (16), and a needle hole (24) of a suture needle (23) is at the end of needle point. The front end of an outer tube (6) of the thread-collecting device (1) is provided with a needle outlet hole (2) and a thread-collecting hook (3), the other end of the thread-collecting draw rod (4) is combined with a thin wire rope (8), and the thin wire rope (8) passes by the top of the thread box (11) and is fixed on the top (13) of the upward extending part of a needle holder rod (15).The utility model can be manufactured to linear shape, gun shape or knee shape which are same as those of existing tweezers, to be suitable for various operation fields.

Description

Forceps type stitching instrument

Technical field

This utility model relates to and is used for operating medical apparatus and instruments, relates in particular to a kind of forceps type stitching instrument.

Background technology

In surgical operation, often run into the art district be positioned at lacuna deeply and also narrow position, need the position sewed up in positions such as amygdala nest, nasal cavity, thoracic cavity, basis cranii and some endoscopic surgerys, these positions often are positioned on the vitals or near it, tissue is fragile, not anti-tractive, accurate stitching how to carry out these positions are one and perplex a surgical difficult problem always.Traditional suture instruments is made up of needle holder, suture needle, suture, and the pinprick of suture needle is positioned at the tail end of suture needle.Sewing process is: the surgeon retracts tissue with operating theater instruments such as tweezers or mosquito forcepss on the other hand and exposes operating field, another hand-held needle holder clamping is installed with the suture needle of suture, from the tissue one side inserting needle that will sew up, syringe needle to sew up organize opposite side to pass after unclamp needle holder, the needle point that the same needle holder clamping of reuse has passed, the tail end that pin is pulled out simultaneously by pin goes out tape, carries out the suture knotting after suture needle is taken off, and finishes once and sews up.This suturing skill exposes position (such as the stitching of skin) preferably at operating field and can not show its shortcoming, but deeply and also narrow lacuna position, its shortcoming is then very obvious: 1, the volume that needle holder is bigger make it be difficult to enter some less lacunas or enter after stopped the patient the visual field; 2, needle point to sew up organize opposite side to pass after, need the assistant to help patient's clamping needle point, because after unclamping needle holder since the answer of tissue needle point is moved back in the tissue again can't clamping, but assistant's help brings two problems again, at first because the narrow and small of art district is difficult to make the assistant to insert another operating theater instruments again, secondly since assistant and patient exert oneself inconsistent usually cause tissue tear or suture needle is lost; 3, because the angle of needle holder clamping suture needle and the angular range of exerting oneself when sewing up are limited, deeply and also narrow and small lacuna art district in can not sew up all wounds, some positions that should sew up yield and change filling or compressing into.Because the needs of minimally invasive surgery development; people have improved the utensil of various stitchings; the stiching instrument that patent documentations such as the patent No. of announcing as: Patent Office of the People's Republic of China is 92232376.3, the patent No. is 200520069505.X disclose is pinprick and is positioned at the suture needle front end; better protect the tissue that will sew up; but all only finished the action of threading, also needed another hands of patient or assistant's help.Patent Office of the People's Republic of China is that 200410052745.9 patent documentation has disclosed a kind of surgical operation automatic suturing machine at the application number of in January, 2006 bulletin, it has solved the consistency problem that needle force, and reduced the damage of tissue, but complex structure, volume are big, operation sequence is many, are not suitable for the stitching of lacunula.In recent years, because artificial intelligence, the development of related disciplines such as tissue engineering, people begin to imitate the more small apparatus of staff making and (ask for an interview Maria Siemionow, KaganOzer, Wlodzimierz Siemionow, Robotic assistance inmicrosurgery, Journal of reconstructive microsurgery, 2000, (16) 8:643-649, microsurgery is assisted by robot, repair the microsurgery magazine, 2000, (16) 8:643-649) or design Based Intelligent Control pin (ask for an interview Patrick Sears and Pierre Dupont, A Steerable Needle Technology Using Curved Concentric Tubes, International Conference on Intelligent Robots and Systems, October9-15,2006, Beijing, China, a kind of controlled pin technology of using crooked coaxitron, international intelligent robot system meeting ,-15 days on the 9th October in 2006, the BeiJing, China), but all be limited to the development of its subject itself, these researchs only rest on theoretical level, do not have available apparatus to produce at present as yet.

The utility model content

This utility model takes into full account the various shortcomings that occur in similar at present or the relevant apparatus both at home and abroad, and is overcome.Its objective is by this utility model realize being positioned at deeply and also the accurate stitching in narrow art district.

For this reason, this utility model provides a kind of forceps type stitching instrument, wherein, described forceps type stitching instrument comprises needle holder, pick-up, line box and elasticity handle, described needle holder and pick-up are thin rod shape, and connect as a wholely by described elasticity handle V-shapedly, and described needle holder and pick-up keep V-arrangement to open by described elasticity handle, between described needle holder and the pick-up line box, the built-in bobbin of described line box.

The function that above-mentioned forceps type stitching instrument has been realized holding pin and picked up line by two simple pull bar drive mechanisms, two equal configurations of structure are elongated, terminal volume is little eventually, be applicable to deeply and in narrow and small art district, operate, can be made into the shapes identical such as straight shape, rifle shape or knee joint shape as required with existing various tweezers according to this principle, use the suture needle of different model, to be applicable to different art districts.This design has taken into full account doctor's operating habit previously, its profile is all basic identical with existing various tweezers with operation, the doctor only need aim at the position that will sew up and mediate and can finish stitching, and the loaded down with trivial details of nurse's threading saved in the design of line box, can sew up continuously, simple to operate, efficient improves.This design tubbiness, the structure that intensity is high also can be used for the stitching at positions such as skin, owing to do not need nurse's threading, whole surgery efficient is improved, because this project organization compactness, easy to carry, but one man operation and simple to operate, so also be applicable to the grassroots army unit hospital or the medical unit of medical worker's anxiety.

Description of drawings

Below with reference to accompanying drawings this utility model is described, wherein:

Fig. 1 is the general illustration of forceps type stitching instrument of the present utility model;

Fig. 2 is the longitudinal section figure of line box;

Fig. 3 is the profile of line box inner shaft lever;

Fig. 4 is the sketch map of needle holder embodiment one;

Fig. 5 schematically shows the front end cross section of this utility model needle holder embodiment one;

Fig. 6 is the sketch map of this utility model needle holder embodiment two;

Fig. 7 is the sketch map of straight shape suture needle;

Fig. 8 is the sketch map of arc suture needle.

Fig. 9 is the enforcement schematic diagram of this utility model pick-up embodiment one.

Figure 10 is the sketch map of this utility model pick-up embodiment two.

Figure 11 is the longitudinal section sketch map of pick-up shown in Figure 10.

Figure 12 is the enforcement sketch map of gun-shaped forceps formula stiching instrument.

Figure 13 is the enforcement sketch map of knee-like tweezer formula stiching instrument.

Figure 14 is the sketch map of the another kind of implementation of forceps type stitching instrument.

Figure 15 is the schematic appearance of forceps type stitching instrument.

The specific embodiment

As shown in Figure 1, forceps type stitching instrument is made up of needle holder 21, pick-up 1, elasticity handle 12 and line box 11.Pick-up 1 is an integral body with needle holder 21 by 12 V-shaped being connected of elasticity handle, and elasticity handle 12 makes both keep V-arrangement to open, the outer tube 6 front ends sealing of pick-up 1, the front end of outer tube 6 is square on the lower side after a while to be a needle outlet 2, outer tube 6 front end inboards just have ten line hooks 3 on the upper side, pick up the preceding end dissociative of line hook 3, the lateral wall of rear end and outer tube 6 forms the joint, the radian part of picking up line hook 3 with pick up line pull bar 4 and form joints, pick up line pull bar 4 other ends and seizing wire 8 and be incorporated into a little 7, seizing wire 8 is fixed in the upwards top 13 of prolongation of needle holder bar 15 around the top of connection box 11, picking up line pull bar 4 middle parts is connected by spring 5 with outer tube 6, picking up line hook 3 can or unclamp and folding with the tension of picking up line pull bar 4, and spring 5 will pick up line pull bar 4 and pull to extreme direction before the pick-up.Line box 11 has axostylus axostyle 10 in the line box 11 between the outer tube 6 and needle holder bar 15 tops of pick-up, bobbin 9 can be contained on the axostylus axostyle 10, and line box 11 belows are wire hole 14.Needle holder 21 is by needle holder pipe 17 and hold pin pull bar 18 and constitute, needle holder bar 15 interconnects between described needle holder pipe 17 and described elasticity handle 12 and with them, the front end of holding pin pull bar 18 is two snappable end teeth 22, needle holder pipe 17 bends towards the outside with the rear end of holding pin pull bar 18, there is tensioned screw 16 rear end, rotation forward or backwards that can be by tensioned screw 16 drives and holds pin pull bar 18 and advance or move back, thereby causes unclamping or interlock of end tooth 22.Screw tensioned screw 16 end tooth 22 is stung tightly, thus fixedly suture needle 23, and there is pinprick 24 at the needle point place of suture needle 23, suture 20 leaves bobbin 9, and the wire hole 14 of logical connection box 11 passes the solidus circle 19 that is positioned on the needle holder pipe 17, arrive the needle holder front end, pass the pinprick 24 that is positioned at suture needle 23 front ends.

Be illustrated in figure 2 as the longitudinal section figure of line box 11, have recessed on the roof 26 of line box 11, seizing wire 8 can slide within it, be extruded with axostylus axostyle 10 before the mediad of its rear wall 27, the top of axostylus axostyle 10 have form the joint with it automatically lock block 25, when block 25 draws back, bobbin 9 can be inserted in axostylus axostyle 10, block 25 resets and can stop bobbin 9 to be deviate from.The lower wall of line box lacks as forms wire hole 14, and antetheca lacks as the easy disassembly bobbin.

Be illustrated in figure 3 as the profile of axostylus axostyle 10, it in it slide block 28 of a spring 29 jack-up, block 25 forms the joint with axostylus axostyle 10 tops, and block 25 rear end extend outwards are oval, when block 25 outwards draws back, slide block 28 can be oppressed and cause spring 29 to shrink downwards in its rear end, bobbin can be inserted in axostylus axostyle 10, after external broach was removed, spring 29 opened and can promote slide block 28 upwards, promote block 25 and reset, stop bobbin to be deviate from.

As shown in Figure 4, needle holder 21 embodiment one are by needle holder pipe 17 and hold pin pull bar 18 and form, and hold pin pull bar 18 and are positioned at needle holder pipe 17, and can spur within it.The front end of holding pin pull bar 18 is that the inner face of 22, two end teeth 22 of two open end teeth of elasticity forms fixed hole 30, and hole 30 has determined fixed position of suture needle and direction.Needle holder 21 rear ends are crooked laterally, and holding pin pull bar 18 has screw thread 31 by rear end part.Needle holder pipe 17 rear ends are a circular groove 32, and tensioned screw 16 tops are two leaves separately, and the below is a disk 33, with circular groove 32 fits.The rotation of tensioned screw 16 can make holds pin pull bar 18 and pulls back or push away forward.

Be the front end cross-sectional view of needle holder 21 embodiment one as shown in Figure 5, show that needle holder pipe 17 cross sections are oblate, the cross section of the blank pipe lacuna 34 in it is a rectangle like, and such structure is fixed two angle positions of end tooth 22 in needle holder pipe 17.

The sketch map of needle holder 21 embodiment two as shown in Figure 6, suture needle 23 is with needle holder pipe 17 fixedlys connected, such structure can make the needle holder front end more very thin, so that it is applicable to the stitching at littler position, slit, the shortcoming of this structure is can not change suture needle when the suture needle rust, but needs to change needle holder.

Suture needle 23 is straight shape as shown in Figure 7, and pinprick 24 is at the front end of suture needle 23.

Suture needle 23 is an arc as shown in Figure 8, and pinprick 24 is at the front end of suture needle 23.

Be illustrated in figure 9 as the schematic diagram of pick-up 1 embodiment one, pass when suture needle 23 and to organize when passing needle outlet 2 forward, suture 20 is promptly taken out of thereupon, suture 20 is divided into two strands owing to passing pinprick 24, lay respectively at the both sides up and down of suture needle 23, because the interlock of whole apparatus pulls back along with picking up line pull bar 4, and ten line hooks 3 are opened backward; When suture needle 23 retreats, because overstocking of tissue, before pinprick is retracted in the tissue, suture 20 is lax crooked, pick up line pull bar 4 simultaneously and push away forward, make ten line hooks 3 closed forward, pass the gap between one and the suture needle 23 of suture 20 on suture needle 23, after needle outlet 2 was withdrawed from suture needle 23, suture 20 was positioned at above the suture needle 23 one and is then picked up line hook 3 and hook.

Be the sketch map of pick-up 1 embodiment two as shown in figure 10, pick up line pull bar 4 and be positioned at outer tube 6 that the front end that picks up line pull bar 4 is a triangular plate 35, before triangular plate 35 most advanced and sophisticated the sensings, needle outlet 2 is positioned at the summary below of triangular plate 35.

Be the longitudinal section sketch map of pick-up embodiment two as shown in figure 11, show that suture needle 23 is positioned at needle outlet 2, be positioned at the summary below of ten line pull bars 4 and triangular plate 35, make triangular plate 35 just in time can pass suture needle 23 and the suture gap between one on suture needle.

Be the enforcement sketch map of gun-shaped forceps formula stiching instrument as shown in figure 12, promptly on the basis of Fig. 1, the rear end and the needle holder bar 15 of the outer tube 6 of pick-up are processed into class S shape, needle holder 21 rear ends are straight shape, the same Fig. 1 of all the other structures and principle, make whole stiching instrument form the rifle shape, be suitable for the Rhizoma Atractylodis Macrocephalae district more deepen the art district, reduce blocking to the patient visual field.

Be the enforcement sketch map of knee-like tweezer formula stiching instrument as shown in figure 13, promptly on the basis of Fig. 1, the rear end and the needle holder bar 15 of the outer tube 6 of pick-up are processed into the knee joint shape, needle holder 21 rear ends are straight shape, the same Fig. 1 of all the other structures and principle, make whole stiching instrument form the knee joint shape, be applicable to the art district that lacuna art district is narrower, reduce blocking the patient visual field.

Be the another kind of implementation of forceps type stitching instrument as shown in figure 14, the inside and outside two wall hollow outs of the rear end of the outer tube 6 of pick-up become discharging hole 36, the position of corresponding with it needle holder bar 15 is extruded with fork 37 to the inside, the pick-up front-end architecture is shown in Figure 9, pick up line pull bar 4 and be incorporated into point 7 below the discharging hole 36 with seizing wire 8, the point 38 of pick-up rear end is fixed at seizing wire 8 rears.

Be the schematic appearance of forceps type stitching instrument as shown in figure 15, its profile is originally identical with existing common forceps subbase.

The following describes concrete working condition of the present utility model.

Before the operation beginning, instrument nurse is selected the forceps type stitching instrument of appropriate size, its corresponding suture needle 23 rear ends are placed the hole 30 of the end tooth 22 of needle holder, the tensioned screw 16 that screws the needle holder rear makes to be held pin pull bar 18 and pulls back, two end tooth 22 interlocks of needle holder are fixed on the needle holder 21 suture needle 23; Draw back and be positioned at axostylus axostyle 10 vertical blocks 25, make axostylus axostyle 10 pass the medium pore of bobbin 9, unclamp block 25 make its automatically reduction finish bobbin and install; The end of a thread of traction bobbin 9 is pulled out suture 20, and the wire hole 14 of logical connection box 11 passes the solidus circle 19 that is positioned on the needle holder pipe 17, arrive the needle holder front end, pass the pinprick 24 that is positioned at suture needle 23 front ends from bottom to top, promptly one of the free-end of suture 20 finished threading above suture needle 23.Stiching instrument promptly assemble finish standby.

When needing to sew up in the art, patient's one hand is held forceps type stitching instrument as holding common tweezers, the position that aligning will be sewed up, make needle holder 21 and pick-up 1 be positioned at the both sides of the tissue that will sew up, mediating gently makes its both front ends close, suture needle 23 is passed and is organized when passing needle outlet 2 forward, suture 20 is promptly taken out of thereupon, suture 20 is divided into two strands owing to passing pinprick 24, lay respectively at the both sides up and down of suture needle 23, in this process, because needle holder is inwardly near the top 13 outside tractive seizing wires 8 that make needle holder bar 15, ten line pull bars 4 are pulled back, and then ten line hooks 3 are opened backward; When suture needle 23 retreats, because overstocking of tissue, before pinprick 24 is retracted in the tissue, suture 20 is lax crooked, along with retreating of suture needle 23, original position is replied on the top 13 of needle holder bar 15, picking up line pull bar 4 pushes away forward under the retraction force effect of spring 5, make ten line hooks 3 closed forward, pass suture 20 and be positioned at gap between one (be free-end one) and the suture needle 23 above the suture needle 23, after needle outlet 2 was withdrawed from suture needle 23, suture 20 was positioned at top one of suture needle 23 (be free-end one) and is then picked up line hook 3 and catch on, after original position was return in suture needle 23, suture was promptly stayed in the tissue.Take out in the process of stiching instrument in lacuna, because tissue overstocks and the tractive of pick-up 1, make suture 20 continue to be pulled outlet box 11 1 segment distances, suitable distance is cut off suture in the outside of pinprick 24, and the suture free-end is also deviate from from pick-up, ties a knot.Remaining suture still is through in the pinprick, does not need once more threading to sew up next time.

After operation finished, instrument nurse opposite spin tensioned screw 16 promoted to hold pin pull bar 18 forward, and two end teeth 22 take off suture needle 23 because elastic reaction opens, and draw back block 25, take off bobbin 9, cleaning equipment, and it is standby to sterilize.

The concrete working condition of the another kind of implementation of forceps type stitching instrument shown in Figure 14 is: suture needle 23 pass organize the process of passing needle outlet 2 forward in, because needle holder is inwardly near making the fork 37 on the needle holder bar 15 withstand seizing wire 8 to extrapolation, ten line pull bars 4 are pulled back, and then make triangular plate 35 return to the rear of needle outlet 2; When suture needle 23 retreats, because overstocking of tissue, before pinprick is retracted in the tissue, suture 20 is lax crooked, fork 37 is drawn back simultaneously, picking up line pull bar 4 pushes away forward under the effect of the retraction force of spring 5, make triangular plate 35 pass suture 20 and be positioned at one (be free-end one) and the gap between the suture needle 23 above the suture needle 23, after needle outlet 2 is withdrawed from suture needle 23, one (be free-end one) that suture 20 is positioned at above the suture needle 23 then caught on by triangular plate 35, after original position was return in suture needle 23, suture was promptly stayed in the tissue.All the other processes and step are with above-mentioned.

The corresponding suture needle model of this kind stiching instrument is fixed, and uses different model suture needle such as arc suture needle, should change the stiching instrument of respective model, so that the position of needle outlet 2 and direction and used suture needle adapt.

Though here with reference to disclosed structrual description this utility model, this utility model is not limited to described details, and the institute that the application is intended to cover in the scope that falls into improvement purpose or appended claims changes or modification.

Claims (10)

1. forceps type stitching instrument, it is characterized in that: described forceps type stitching instrument comprises needle holder (21), pick-up (1), line box (11) and elasticity handle (12), described needle holder (21) is thin rod shape with pick-up (1) front end, and connect as a whole by described elasticity handle (12) V-shapedly, described needle holder (21) keeps V-arrangement to open with pick-up (1) by described elasticity handle (12), be line box (11) between described needle holder (21) and the pick-up (1), the built-in bobbin of described line box (11) (9).

2. forceps type stitching instrument according to claim 1, it is characterized in that: described needle holder (21) is made up of the needle holder pipe (17) and the pin pull bar (18) of holding that is positioned at it, one needle holder bar (15) is positioned between described needle holder pipe (17) and the described elasticity handle (12) and with them and interconnects, the described front end of holding pin pull bar (18) has two open end teeth of elasticity (22), the occlusal surface of described two end teeth (22) forms the hole (30) of a fixed admittance suture needle (23), and there is tensioned screw (16) described rear end of holding pin pull bar (18), the below of described tensioned screw (16) is a disk (33), and described disk (33) is complementary with the circular groove (32) of described needle holder pipe (17) rear end.

3. forceps type stitching instrument according to claim 2 is characterized in that: the cross section of described needle holder pipe (17) is for oblate, and the cross section of the blank pipe lacuna (34) in it is a rectangle like,

4. forceps type stitching instrument according to claim 1, it is characterized in that: described needle holder (21) is made up of the needle holder pipe (17) and the pin pull bar (18) of holding that is positioned at it, one needle holder bar (15) is positioned between described needle holder pipe (17) and the described elasticity handle (12) and with them and interconnects, one suture needle (23) is by two end tooth (22) clampings or directly fix with needle holder pipe (1 7), and the pinprick (24) of described suture needle (23) is at its front end.

5. according to any described forceps type stitching instrument among the claim 2-4, it is characterized in that: what described pick-up (1) had an outer tube (6) and was positioned at it picks up line pull bar (4), the front end of described outer tube (6) is a needle outlet (2), the front end of outer tube (6) has ten line hooks (3), pick up the preceding end dissociative of line hook (3), the lateral wall of rear end and outer tube (6) forms the joint, the radian part of picking up line hook (3) with pick up line pull bar (4) and form the joint, picking up line pull bar (4) other end combines with a seizing wire (8), the upwards top (13) of prolongation of needle holder bar (15) is fixed on the top that described seizing wire (8) is walked around described line box (11), picks up line pull bar (4) middle part and is connected by spring (5) with outer tube (6).

6. according to any described forceps type stitching instrument among the claim 2-4, it is characterized in that: what described pick-up (1) had an outer tube (6) and was positioned at it picks up line pull bar (4), the described front end that picks up line pull bar (4) is triangular plate (35), before the tip of described triangular plate (35) is pointed to, one needle outlet (2) is positioned at the below of described triangular plate (35), for suture needle (23) discrepancy pick-up (1).

7. forceps type stitching instrument according to claim 1, it is characterized in that: have recessed on the roof (26) of described line box (11), one seizing wire (8) can slide within it, be extruded with axostylus axostyle (10) before the mediad of the rear wall (27) of described line box (11), the top of described axostylus axostyle (10) have form the joint with it automatically lock block (25), the lower wall of described line box (11) lacks as forms wire hole (14), antetheca lack as.

8. forceps type stitching instrument according to claim 7, it is characterized in that: the slide block (28) that in the described axostylus axostyle (10) is a spring (29) jack-up, described block (25) forms the joint with described axostylus axostyle (10) top, and described block (25) rear end extend outwards is oval.

9. forceps type stitching instrument according to claim 1, it is characterized in that: described needle holder (21) is made up of the needle holder pipe (17) and the pin pull bar (18) of holding that is positioned at it, one needle holder bar (15) is positioned between described needle holder pipe (17) and the described elasticity handle (12) and with them and interconnects, described pick-up (1) has an outer tube (6), the inside and outside two wall hollow outs of the rear end of described outer tube (6) become discharging hole (36), are extruded with fork (37) to the inside with the position of the corresponding needle holder bar of described discharging hole (36) (15).

10. forceps type stitching instrument according to claim 1 is characterized in that: the profile of described forceps type stitching instrument is straight shape, rifle shape or knee joint shape.

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