WO2021104510A1

WO2021104510A1 - Kirschner wire surgical forceps

Info

Publication number: WO2021104510A1
Application number: PCT/CN2020/132557
Authority: WO
Inventors: 刘晓霞
Original assignee: 郑州泽正技术服务有限公司
Priority date: 2019-11-30
Filing date: 2020-11-29
Publication date: 2021-06-03
Also published as: WO2022110701A1

Abstract

Kirschner wire surgical forceps, comprising two joint rotating portions (101, 102) that rotate with respect to each other, each of the joint rotating portions (101, 102) respectively extending towards one end to form a forceps head (201, 202), and two forceps heads (201, 202) constituting an opening/closing jaw (260); and each of the joint rotating portions (101, 102) respectively extending towards the other end to form a handle (301, 302), wherein the forceps heads (201, 202) are two clamps (210, 220) provided with transverse groove clamping surfaces (211) that work in conjunction to each other. The kirschner wire surgical forceps are simple in structure and solve the problems of clamping, bending, and cutting-off of orthopedic kirschner wires.

Description

Kirschner wire surgical forceps

Technical field

The invention belongs to orthopedic surgical instruments, in particular, surgical forceps for clamping, bending and cutting of orthopedic Kirschner wires.

Background technique

Kirschner wire is a commonly used internal fixation material in orthopedics. It is a slender cylindrical structure with a tip. Its specifications are generally fixed at about 20 cm, and there are several different specifications between 0.5-3.5 mm in diameter. It is used to fix short fractures or avulsion fractures and other fractures with low stress. It is also often used in the fixation of temporary fractures in orthopedic surgery. Although Kirschner wires provide a lot of convenience for fracture reduction and fixation, there are also many complications, mainly including two aspects: the sharp tail protrusion of the Kirschner wires irritates the surrounding soft tissues and the displacement of the Kirschner wires causes loosening.

In order to solve the above problems, Professor Kramer of the University of Washington in the United States introduced a surgical method to bend the tail end of the Kirschner wire by 180° in 7 steps. The researchers collected all displaced calcaneal fractures during the whole year of 2008. , A total of 56 cases (51 patients), of which 11 cases were not fixed with Kirschner wires, and 19 cases were followed up for less than one year. The remaining 25 cases (24 patients) shared 86 Kirschner wires with fractures, all with bent tail ends. The average follow-up after operation to the end was 2.26 years (12-46 months). X-ray films showed that none of the Kirschner wires shifted, nor did Kirschner wire-related pain occur. 10 patients needed to remove the internal fixation due to steel plate and other reasons. A total of 40 Kirschner wires were removed without any complications. . By bending the end of the Kirschner wire 180 degrees, there is very little soft tissue irritation caused by the shift of the Kirschner wire and the protruding end of the Kirschner wire. Therefore, after the application of this method, Kirschner wire fixation of fractures rarely occurs loss of fixation, which can meet the requirements of early postoperative activities. The surgical method is: This method is mainly suitable for situations where Kirschner wires need to be embedded in bone, such as tension bands and permanent fracture fixation. In addition, when this technology is used for temporary fixation of Kirschner wires, it will be more convenient to remove. This technology can cleverly bend the Kirschner wire by 180° through 7 steps, usually 0.045, 0.054, 0.062 inch Kirschner wire is used. The key step of the surgical operation is 1 step, the Kirschner wire is withdrawn from the final depth of 5mm This can prevent the Kirschner wire from being too deep and penetrating the contralateral cortex. After the Kirschner wire is bent at the tail end, it can be knocked into the bone. Use a needle holder to hold the Kirschner wire tightly against the bone surface, and then cover the entire Kirschner wire with the head of a No. 7 stainless steel aspirator. The needle holder clamps the Kirschner wire, and the suction head is used to bend the Kirschner wire in a direction perpendicular to the needle holder so that the Kirschner wire forms an angle of 90°. Slide the aspirator head and the needle holder to the tail side of the Kirschner wire, clamp the needle holder at a position 5 mm away from the bend, and bend the Kirschner wire in the opposite direction through the aspirator head, folding back about 120°. The needle holder clamps the first clamped position, close to the bone surface. Insert the aspirator head into the second bend, use the second bend as a lever, and continue to increase the bending angle in the direction of the first bend, so that the first bend becomes 170°. It is worth noting that due to the barrier of bone, the 170° bend cannot be achieved directly through the first bend, so the second bend is indispensable. Cut the Kirschner wire with a clamp about 5mm away from the first bending point. Use a needle holder to increase the bend of the Kirschner wire to make it a 180° angle. Knock the end of the bent Kirschner wire into the bone. After the sharp end of the Kirschner wire is inserted into the bone, the smooth hook-shaped part is flush with the bone surface.

This surgical method for bending the tail end of the Kirschner wire not only requires more steps and time-consuming, but also due to repeated bending, the strength of the tail end of the Kirschner wire is reduced due to mechanical fatigue; in addition, the bending step is performed in the Kirschner wire. Most of the needle is inserted into the bone. When using ordinary needle-nose pliers, the tail end of the Kirschner wire lacks the necessary support, which causes greater pressure on the bone and is likely to cause the surrounding bone to crack. Furthermore, Kirschner wires with a diameter of 1.5mm or less are generally applicable, and the scope of application is small.

A Kirschner wire bending and scraping device with the application number CN201510248436.7 discloses a clamping member for holding the Kirschner wire. The clamping member includes two opening and closing parts for clamping the Kirschner wire. The two opening and closing parts of the holder are used as a rotating shaft. The rotating shaft can be a cylinder or a cone, which can make the contact that is provided with a bending force to the Kirschner wire rotate around the holder. That is, the contact rotates around the axis of rotation, and the contact presses the Kirschner wire to bend around the forming core block. After the Kirschner wire is bent, if the length of the Kirschner wire is suitable after bending, then remove the bending device, if the Kirschner wire is bent After bending, the length is long. The scraping blade used to scrape the Kirschner wire on the contact and the side of the shaped core block at the end of the holder form a scraping cut. The scraping blade continues to rotate along the scraping cut, and the process of rotation Scrape the Kirschner wires in the middle until the scraping blade is in contact with the side of the shaped core block (the distance can also be very short, so that the Kirschner wires are disconnected), and the clamped Kirschner wires are scraped and cut. Since the patent uses the two opening and closing parts of the clamping piece as the rotating shaft, the opening of the clamping piece is very small, and it is inconvenient to clamp the Kirschner wire. Moreover, the rotating shaft is too long, which can transmit force to the contact. The moment arm is too long, which causes very inconvenient use.

Summary of the invention

In order to solve the technical problem that the opening degree of the existing Kirschner wire bending and scraping surgical forceps is small and the force arm of the contact is too long, the present invention provides a Kirschner wire surgical forceps, including two relatively rotating forceps. Two cheek rotating parts, each cheek rotating part protrudes a pliers head to one end, two pliers heads constitute an opening and closing jaw; each cheek rotating part extends a handle to the other end, the two Two pliers heads constitute an opening and closing pliers mouth, and one of the two pliers heads is provided with a clamping surface of a transverse groove.

The pliers head provided with the clamping surface of the transverse groove or the cheek part protruding from the pliers head is provided with a pressing rotating shaft, and the extension direction of the pressing shaft is consistent with the extending direction of the pliers head provided with the clamping surface of the transverse groove.

The pressing shaft is provided on the side of the end surface of one end of the transverse groove on the transverse groove clamping surface.

The pressing shaft is sleeved with a pressing head, and the pressing head is provided with a shaft hole matched with the pressing shaft and connected with a pressing handle.

A part of the ring is formed on the periphery of the shaft hole of the indenter, and a section of annular groove is arranged on the outer side of the part of the ring, and the center line of the bottom of the annular groove is tangent to the center line of the bottom of the transverse groove on the clamping surface of the transverse groove.

The length of the section of annular groove is the shortest. During the process of pressing the Kirschner wire into a hook shape by the rotating indenter, the section of annular groove is always in contact with the Kirschner wire.

The pressing head is provided with a pressing groove matched with the horizontal groove.

The cross section of the annular groove or the horizontal groove or the pressing groove is rectangular, U-shaped, semi-circular and small semi-circular.

The pressing head is provided with a shaft hole matched with the pressing shaft and connected with the pressing handle,

A partial circular ring is formed on the periphery of the shaft hole of the indenter, and a section of annular groove is arranged on the outer side of the partial circular ring, and the center line of the bottom of the circular groove is tangent to the center line of the bottom of the horizontal groove on the clamping surface of the horizontal groove;

A Kirschner wire surgical forceps, comprising two cheek rotating parts that rotate relative to each other, each cheek rotating part protrudes a forceps head to one end respectively, and the two forceps heads form an open and close jaw; each cheek rotates A handle is partially extended to the other end, and the pliers heads are two clamping heads provided with mutually matched transverse groove clamping surfaces.

According to the Kirschner wire surgical forceps, one of the two cheek rotating parts or one of the two gripping heads is provided with a pressing shaft, the pressing shaft is sleeved with an indenter, and the pressing handle is connected to the indenter, and the indenter The clamped Kirschner wire can be pressed into a hook shape, and the Kirschner wire bending pliers are formed at this time.

In the Kirschner wire surgical forceps, the pressing shaft is arranged on the periphery of a clamping head.

In the Kirschner wire surgical forceps, the pressing shaft is a part of the clamping head.

In the Kirschner wire surgical forceps, the pressing shaft is coaxial with the clamping opening.

In the Kirschner wire surgical forceps, the two cheek rotating parts are hinged structures.

According to the Kirschner wire surgical forceps, each of the cheek rotating parts includes a rotating shaft and a rotating shaft sleeve extending from the periphery of the rotating shaft, and the rotating shafts of the two cheek rotating parts are placed on the rotating shaft sleeves of each other Inside, the two rotating shaft sleeves of the rotating parts of the two gills are mutually provided with rotating shafts, and the rotating shafts extend out of the clamping head, forming an infinite effort-saving clamping pliers at this time.

In the Kirschner wire surgical forceps, the rotating shaft extends out of the pressing rotating shaft. At this time, a labor-saving Kirschner wire bending pliers are formed.

According to the Kirschner wire surgical forceps, each of the cheek rotating parts includes a rotating shaft and a rotating shaft sleeve extending from the periphery of the rotating shaft, and the rotating shafts of the two cheek rotating parts are placed on the rotating shaft sleeves of each other Inside, the two rotating shaft sleeves of the rotating parts of the two gills are mutually provided with rotating shafts, and the rotating shafts are provided with cutting edges instead of the clamping heads. At this time, infinite labor-saving cutting pliers are formed.

In the Kirschner wire surgical forceps, the blade on one side of the cutting edge is L-shaped.

According to the Kirschner wire surgical forceps, the two cheek rotating parts that rotate relative to each other, one cheek rotating part is an axial sleeve extending from the periphery of the base, and the other cheek rotating part is matched with the sleeve The rotating shaft, the pliers head is a truncated through hole arranged parallel to the axis on the base and the rotating shaft, instead of each cheek rotating part, a pliers head is respectively extended to one end.

In the Kirschner wire surgical forceps, the number of the truncated through holes is at least two, and the diameters are different.

A Kirschner surgical forceps, comprising two cheeks that rotate relatively, each cheek extends a clamping head to one end, and the two clamping heads form an opening and closing jaw; each cheek extends the forceps to the other end A handle, the two clamping heads constituting the opening and closing jaws, one of the clamping heads is provided with a transverse groove surface.

One of the two cheeks is provided with a hole or a shaft, or one of the clamping heads protruding from the cheeks is provided with a hole or a shaft.

The axis of the hole or the shaft is consistent with the extension direction of the clamping head.

A hole or shaft provided in one of the two gills or one of the clamping heads protruding from the gills is clearance fit with a rotating shaft or sleeve, the rotating shaft or sleeve is connected to one end of the indenter, and the other end of the indenter extends out of the contact The pressing handle 241 is connected, and the pressing head includes a contact or only the contact is used for bending.

The hole is arranged in one of the two cheeks, and the part of the shaft that fits with the clearance of the hole extending out of the hole is provided with a limiting groove. During the bending process of the limiting groove, the shaft rotates in the hole, and the jaws When the Kirschner wire is clamped through the horizontal groove, the Kirschner wire is stuck in the horizontal groove, and at the same time, the Kirschner wire is also stuck in the limiting groove to restrict the indenter from being separated from the jaw.

A Kirschner wire surgical forceps, comprising two cheeks that rotate relative to each other. Each cheek extends a clamping head to one end, and the two clamping heads form an opening and closing jaw; each cheek extends to the other end Pliers handle, the two clamping heads constituting the opening and closing pliers mouth, one of the clamping heads is set as a rotating shaft, the rotating shaft is sleeved with a sleeve, the sleeve is connected to one end of the indenter, and the other end of the indenter extends out of the contact The pressing handle is connected, and the jaws are provided with a structure that restricts the sleeve from coming out of the rotating shaft.

The pliers mouth is provided with a structure that restricts the shaft sleeve from coming out of the rotating shaft, and the rotating shaft constituting the pliers mouth is provided with a transverse groove for clamping the Kirschner wire, and the shaft sleeve is located between the root of the rotating shaft and the transverse groove.

The sleeve is located between the root of the rotating shaft and the transverse groove, and only one sleeve is located between the root of the rotating shaft and the transverse groove.

The sleeve is radially provided with an annular slot hole, and the bottom of the annular slot hole is matched with the horizontal slot.

A limiting groove is provided at the root of the other clamping head, and when the pliers mouth clamps the Kirschner wire, the shaft sleeve or part of the shaft sleeve extends into the limiting groove.

The invention has a simple structure and solves the problems of clamping, bending, and cutting of the orthopedic Kirschner wire. The specific effects are described in detail in the embodiment.

Description of the drawings

Figure 1 Schematic diagram of the first type of Kirschner wire surgical forceps;

Figure 2 A schematic diagram of the enlarged structure of the head of the first Kirschner wire surgical forceps;

Figure 3 Schematic diagram of the explosive structure of the first Kirschner wire surgical forceps;

Figure 4 Schematic diagram of the enlarged head of the first type of Kirschner wire surgical forceps exploded;

Fig. 5 The enlarged schematic view of the head of the first type of Kirschner wire surgical forceps exploded from another angle;

Figure 6 Schematic diagram of the second type of Kirschner wire surgical forceps;

Figure 7 The schematic diagram of the enlarged structure of the head of the second Kirschner wire surgical forceps;

Figure 8 Schematic diagram of the explosive structure of the second type of Kirschner wire surgical forceps;

Fig. 9 The enlarged schematic diagram of the head of the second kind of Kirschner wire surgical forceps exploded;

Fig. 10 A schematic diagram of the enlarged structure of the head of the second type of Kirschner wire surgical forceps exploded from another angle;

Figure 11 The schematic diagram of the third type of Kirschner wire surgical forceps;

Figure 12 A schematic diagram of the enlarged structure of the head of the third Kirschner wire surgical forceps;

Figure 13 Schematic diagram of the explosive structure of the third type of Kirschner wire surgical forceps;

Figure 14 Schematic diagram of the fourth type of Kirschner wire surgical forceps;

Figure 15 The enlarged schematic diagram of the head of the fourth type of Kirschner wire surgical forceps exploded;

Figure 16 A schematic diagram of the enlarged head structure of the fourth type of Kirschner wire surgical forceps exploded from another angle;

Figure 17 Schematic diagram of the first labor-saving shear structure;

Figure 18 Schematic diagram of the first type of labor-saving shear explosion structure;

Figure 19 Schematic diagram of the second type of labor-saving shears;

Figure 20 The schematic diagram of the enlarged view of the head of the second type of labor-saving shears;

Figure 21 is a schematic diagram of the structure of the Kirschner wire surgical forceps according to the present invention;

Fig. 22 is a schematic diagram of the explosive structure of the Kirschner wire surgical forceps according to the present invention.

Figure 23 Schematic diagram of the structure of Kirschner wire surgical forceps;

Figure 24 A schematic diagram of the enlarged structure of the head of the Kirschner wire surgical forceps exploded;

Figure 25 is a schematic diagram of the enlarged structure of the head of the Kirschner wire surgical forceps exploded;

Figure 25 is a partial enlarged view of the pressing handle 241 and the indenter of the Kirschner wire surgical forceps;

Figure 27 is a partial enlarged view of the pressing handle 241 and the indenter of the Kirschner wire surgical forceps;

Figure 28 is a partial enlarged view of a special-shaped groove on the clamping surface of the Kirschner wire surgical forceps;

Figure 29 A partial enlarged view of the forceps of the Kirschner wire surgical forceps;

Figure 30 is a partial enlarged view of the indenter of the Kirschner wire surgical forceps;

Figure 31 is a partial enlarged view of Kirschner wires with different diameters clamped by Kirschner wires with surgical forceps;

Figure 32 Schematic diagram of the process of axis positioning method;

Figure 33 The enlarged schematic diagram of the head of the Kirschner wire surgical forceps exploded;

Figure 34 A partial enlarged view of the forceps of the Kirschner wire surgical forceps.

Detailed ways

As shown in Figure 21-22, a Kirschner wire surgical forceps, including two cheek rotating parts that rotate relative to each other, cheek rotating part Ⅰ101 and cheek rotating part Ⅱ102, cheek rotating part Ⅰ101 and cheek rotating part Ⅱ102 to one end The pliers head 201 and the pliers head Ⅱ202 are respectively extended. The pliers head 201 and the pliers head Ⅱ202 constitute the opening and closing jaws 260; the cheek rotating part Ⅰ101 and the cheek rotating part Ⅱ102 respectively extend the handle 301 and the handle Ⅱ302 to the other end. The heads are clamping head Ⅰ210 and clamping head Ⅱ220 with mutually matched transverse groove clamping surfaces. The figure includes the pressing part. The pressing part is deleted, which is the clamping pliers. The two pliers heads, pliers heads I201 and pliers heads Ⅱ202, one of the two pliers heads I201 is provided with a transverse groove clamping surface 211. When the Kirschner wire is bent in this way, the horizontal groove 2110 of the clamping surface 211 of the transverse groove of the clamp head Ⅰ201 limits the Kirschner wire, and the Kirschner wire is bent around another clamp head Ⅱ202 to facilitate the detachment of the bent Kirschner wire. .

The clamp head I201 with the clamping surface 211 of the transverse groove or the cheek 102 protruding from the clamp head I201 is provided with a pressing shaft 230, and the extension direction of the pressing shaft 230 is in accordance with the extension of the clamp head I201 with the clamping surface 211 of the horizontal groove. The direction of exit is the same. In this way, a pressing head 231 is sleeved on the pressing rotating shaft 230, and a pressing handle 240 is connected to the pressing head 231. The pressing head 231 can press the clamped K-wire into a hook shape. At this time, Kirschner wire bending pliers are formed.

The pressing shaft 230 is provided on the side of the end surface 2012 of one end of the lateral groove 2110 on the lateral groove clamping surface 211. Such a structure facilitates the provision of a section of annular groove 2110 on the outside of the indenter 231.

The pressing shaft 230 is sleeved with a pressing head 231, and the pressing head 231 is provided with a shaft hole 2300 matched with the pressing shaft 230 and connected with a pressing handle 240. The rotating press head 231 can press the clamped Kirschner wire into a hook shape, and at this time constitutes a Kirschner wire bending pliers.

A partial ring 232 is formed on the periphery of the shaft hole 2300 of the indenter 231, and a section of annular groove 2320 is provided on the outer side of the partial ring 232. The center line of the groove bottom of the annular groove 2320 and the groove bottom center of the transverse groove 2110 on the transverse groove clamping surface 211 are provided. The line is tangent. With such a structure, when the shaft hole 2300 of the indenter 231 is mated with the pressing shaft 230, since the center line of the groove bottom of the annular groove 2320 is tangent to the center line of the groove bottom of the transverse groove 2110 on the transverse groove clamping surface 211, The Kirschner wire passes through both the transverse groove 2110 and the annular groove 2320 to limit (that is, lock) the relative position of the shaft hole 2300 and the pressing shaft 230 during relative rotation, and prevent the shaft hole 2300 from coming out of the pressing shaft 230.

The length of the annular groove 2320 is the shortest. During the process of pressing the Kirschner wire into a hook shape by the rotating indenter 231, the annular groove 2320 is always in contact with the Kirschner wire. With this structure, when the rotary press head 231 presses the Kirschner wire into a hook shape, the Kirschner wire always passes through both the transverse groove 2110 and the annular groove 2320, and always restricts (that is, locks) the shaft hole 2300 and the pressing The relative position of the rotating shaft 230 during the relative rotation prevents the shaft hole 2300 from coming out and pressing the rotating shaft 230.

The pressing head 231 is provided with a pressing groove 2310 matched with the horizontal groove 2110. The pressing groove 2310 matched with the horizontal groove 2110 enables the pressing groove 2310 to press the K-wire into a hook shape. The pressing groove 2310 always limits the K-wire and presses the K-wire into a regular hook shape.

The cross section of the annular groove 2320 or the transverse groove 2110 or the pressing groove 2310 is rectangular, U-shaped, semi-circular and small semi-circular. The small semicircle means that the arc line of the annular groove or the transverse groove is smaller than the arc line of the semicircle.

A Kirschner wire surgical forceps, as shown in Figure 1-11, includes two cheek rotating parts that rotate relative to each other, the cheek rotating part Ⅰ101 and the cheek rotating part Ⅱ102, the cheek rotating part Ⅰ101 and the cheek rotating part Ⅱ102 are towards one end respectively Extend the pliers head Ⅰ201 and the pliers head Ⅱ202, the pliers head 201 and the pliers head Ⅱ202 constitute the opening and closing jaw 260; the cheek rotating part Ⅰ101 and the cheek rotating part Ⅱ102 extend to the other end of the handle 301 and handle Ⅱ302, respectively, In order to set the clamping head Ⅰ210 and clamping head Ⅱ220 with the clamping surfaces of the horizontal grooves, the pressing part is included in the figure. The pressing part is deleted, which is the clamping pliers, because the clamping pliers is directly rotated by the gill. Extend, the two clamping heads on the clamping surface of the transverse groove are closer to the rotating shaft, and the clamping will save effort;

In the aforementioned Kirschner wire surgical forceps, one of the cheek rotating part Ⅰ101 and the cheek rotating part Ⅱ102 or one of the jaw head Ⅰ210 and the jaw head Ⅱ220 is provided with a pressing shaft 230, because the cheek rotating part and the clamp The tooth head is an integral structure, and it is not easy to clearly distinguish between the cheek rotating part and the chuck head. In fact, whether the pressing shaft 230 is arranged on the cheek rotating part or the chuck head, it can realize or basically realize the pressing action is not affected by the two. Affected by the opening and closing movements of the clamping heads, the opening degree of the two clamping heads is also not affected by the rotating shaft, so the opening degree of the two clamping heads is relatively large. The pressing shaft 230 sets the pressure head by pressing the sleeve 232 231. The pressing handle 240 is connected to the indenter 231, so that the moment arm between the indenter and the sleeve is short, and there is no or small torque between the two, the force is simple, and the operation is convenient; the indenter 231 can hold the The Kirschner needle is pressed into a hook shape. At this time, Kirschner wire bending pliers are formed.

The pressing rotating shaft 230 is arranged on the periphery of the clamping head I210 and the clamping head II220. In the figure, the rotating part of the cheek part extends out of the pressing shaft 230. A pressing shaft 230 parallel to the clamping head can also be provided. The pressing shaft 230 and the clamping head are fixed by a connecting piece; these structures make the pressing head sit on the pressing handle. ,Simple structure;

The pressing shaft 230 is a part of the clamping head I210 and the clamping head II220. At this time, pressing the shaft to avoid the clamping part will generate torque. Because the arm is short, it does not affect the operation. The figure discloses that the pressing shaft is close to the rotating shafts of the two clamping heads. The clamping is more laborious, but it can also be used. Two clamping heads are close to its rotating shaft, and one of the clamping heads is extended to press the rotating shaft, which can also be achieved;

14-16, the pressing shaft 230 is coaxial with the clamping opening 260, and the jaws in the figure are the clamping openings 260.

As shown in Figure 1, the cheek rotating part I101 and the rotating part II102 are hinged structures 410, as shown in Figures 1-4 and 11-16, the cheek rotating part I101 and the rotating part II102 are hinged by a hinge shaft 103.

As shown in Figure 6-10, each of the cheek rotating parts includes

rotating shafts

101, 102 and

rotating shaft sleeves

104, 105 extending outside the periphery of the rotating shaft. The rotating shafts of the two cheek rotating parts are placed on each other's rotating shafts. Inside the sleeve, the two rotating shaft sleeves of the two cheek rotating parts are mutually provided with

rotating shafts

101 or 102, and the rotating shafts extend out of the clamping heads 210, 220. Since the clamping heads 210 and 220 are on the rotating shaft, the clamping heads 210 and 220 can be infinitely close to the rotating shaft. Since the pressing part is deleted, an infinite effort-saving clamping pliers is formed at this time.

The rotating shaft 102 extends and pressing the rotating shaft 230. In this way, adding the pressing part in the figure now constitutes a Kirschner wire bending pliers for labor-saving clamping.

When in use, the clamping head clamps the Kirschner wire, the pressing head presses the Kirschner wire, and the rotating and pressing handle bends the Kirschner wire into a hook shape.

As shown in Figure 17-20, each of the cheek rotating parts includes a rotating shaft 421 and a rotating shaft sleeve 422 extending outside the periphery of the rotating shaft. The rotating shafts of the two cheek rotating parts are placed in the rotating shaft sleeve of the other. The two rotating shaft sleeves of the two gills rotating parts are mutually provided with a rotating shaft structure 430, and the rotating shaft is provided with a blade 450 instead of the clamping head. At this time, there is no clamping head, which constitutes unlimited labor-saving cutting pliers.

The knife edge 451 on one side of the knife edge 450 is L-shaped. Since the clamping heads 210 and 220 can be infinitely close to the rotating shaft, the openings of the two blades 450 are relatively large. When in use, the two blades 450 are not easy to clamp the Kirschner wires, and it is not easy to cut the Kirschner wires, and the L-shaped blade 451 is added. , Is to increase the Kirschner wire limit stop to prevent the Kirschner wire from coming out, the handle is forceful, and the two blades 450 cut off the Kirschner wire, and the L-shaped blade 451 can be used without a blade.

As shown in Figure 21-22, the two gills rotating parts that rotate relative to each other, one of the gills rotating part is the shaft sleeve 61 extending axially from the periphery of the base 60, and the other gills rotating part is the shaft 62 matched with the shaft sleeve. The pliers head is a truncated through hole 63 arranged parallel to the axis on the base and the rotating shaft, instead of each cheek rotating part, a pliers head is respectively extended to one end.

A Kirschner wire surgical forceps, the number of the truncated through holes 63 is at least two, and the diameters are different.

The Kirschner wires of different diameters are inserted into the corresponding truncated through holes 63, the

handles

101 and 102 are rotated, and the rotating shaft 62 rotates relative to the base 60. Since the truncated through hole 63 is very close to the axis of rotation, it is very labor-saving when cutting.

Example: As shown in Fig. 33, a Kirschner wire surgical forceps, including two cheeks that rotate relative to each other, the cheek 1201 and the cheek 1102, each cheek extends out a clamping head to one end, respectively, a clamping head I 1201 And clamping head Ⅱ1202. The two clamping heads form an opening and closing jaws 1260; each cheek extends out of the pliers handle to the other end, as shown in the figure, the two pliers handles are 1301 and 302.

The clamping head I 201 and the clamping head II 202 constituting the opening and closing jaws, one of the clamping heads is set as a rotating shaft 230, the rotating shaft 230 is sleeved with a shaft sleeve 232, and the shaft sleeve 232 is connected to one end of the indenter 231, the indenter 231 The other end extends out of the contact 2312 and is connected to the pressing handle 241, and the jaw 260 is provided with a structure that restricts the sleeve 232 from coming out of the shaft 230.

The pliers mouth 260 is provided with a structure that restricts the shaft sleeve 232 from coming out of the shaft 230. The shaft 230 constituting the pliers mouth 260 is provided with a transverse groove 2110 for clamping Kirschner wires, and the shaft sleeve 232 is located between the root of the shaft 230 and the transverse groove 2110.

The sleeve 232 is located between the root of the rotating shaft 230 and the transverse groove 2110, and only one sleeve is located between the root of the rotating shaft 230 and the transverse groove 2110.

The sleeve 232 is radially provided with an annular slot 2320, and the bottom of the annular slot 2320 is matched with the horizontal slot 2110. After the bottom of the annular slot 2320 is matched with the transverse groove 2110, the transverse groove 2110 is always exposed at the bottom of the annular slot 2320 during the turning and bending process around the shaft, and the transverse groove 2110 clamps the Kirschner wire, and the Kirschner wire is now in the transverse groove. 2110 is fixed, and the Kirschner wire restricts the sleeve 232 between the root of the rotating shaft 230 and the transverse groove 2110 to escape from the rotating shaft 230.

The root of the other clamping head is provided with a limiting groove 2021. When the pliers mouth 260 clamps the Kirschner wire, the shaft sleeve 232 or part of the shaft sleeve extends into the limiting groove 2021.

The working process of the present invention is as follows:

Sleeve the shaft hole 2300 on the indenter 231 on the shaft 230 so that the shaft sleeve 232 is located between the root of the shaft 230 and the transverse groove 2110. After the bottom of the annular slot 2320 is matched with the transverse groove 2110, the bottom of the annular slot 2320 is exposed The horizontal groove 2110 and the horizontal groove 2110 are used for holding Kirschner wires. Finally, the

transverse grooves

2110 and 2320 define the position of the shaft sleeve and the rotating shaft.

In the initial state, the contact 2312 on the indenter 231 is on the side of the clamping head I201. The handle 301 and the handle 302 are moved to open the jaws 260 and insert the Kirschner wire. At this time, the Kirschner wire is fixed by the transverse groove 2110.

The

handles

301 and 302 rotate, the jaw 260 clamps the Kirschner wire, and the other limiting groove 2021 is provided at the root of the clamping head. At this time, the shaft sleeve 232 or part of the shaft sleeve extends into the limiting groove 2021.

Rotate the pressing handle 241 to make the limit groove 2310 on the contact 2312 contact the upper end of the Kirschner wire. During the rotation of the pressing handle, the Kirschner wire is deformed around the clamping head Ⅱ202. After the Kirschner wire is deformed to a certain angle, it is held into a hook shape under the joint action of the inner arc surface 2311 of the indenter 231 and the contact 2312. Then, the handle 301 and the handle 302 are turned, and the jaw 260 is opened. Because the front end of the jaw 260 is thin, the hook-shaped Kirschner wire can be taken out smoothly at this time.

Example: As shown in Fig. 23, a Kirschner surgical forceps, including a forceps handle 301 and a forceps handle 302, a gripper shaft 103, a forceps head 210, a forceps head 220, a pressing handle 241, and a forceps mouth 260.

As shown in Figure 24, a Kirschner wire surgical forceps includes two cheek rotating parts that rotate relatively, cheek rotating part Ⅰ101 and cheek rotating part Ⅱ102, cheek rotating part Ⅰ101 and cheek rotating part Ⅱ102 are respectively extended to one end Out of the clamping head I201 and the clamping head II202, the clamping head I201 and the clamping head II202 constitute the opening and closing jaws 260; one of the two clamping heads I201 is provided with a transverse groove surface 0. In fact, the transverse groove surface directly protrudes from the rotating part of the gill. Since the distance between the transverse groove holding the Kirschner wire and the axis of the rotating shaft of the gill is short, the gripping of the Kirschner wire saves effort and is easy to clamp. When the Kirschner wire is bent in this way, the horizontal groove 2110 of the clamping surface of the clamping head 201 restricts the Kirschner wire, and the Kirschner wire is bent around another clamping head Ⅱ202. The end of the clamping head Ⅱ202 is thinner than the root. And the surface is smooth, which is convenient for the Kirschner wire to come out after bending.

A shaft hole 240 is provided on the clamping head I201 with the clamping surface 211 or the gill 102 extending from the clamping head I201, and the shaft hole 240 is a blind hole. The extension direction of the pressing shaft 230 is consistent with the direction of the shaft hole 240.

A pressing head 231 is provided on the pressing shaft 230, and a pressing handle 241 is connected to the pressing head 231. During the rotation of the pressing handle 241 around the pressing shaft 230, the pressing head 231 can press the clamped K-wire into a hook shape. Needle bending pliers.

As shown in Figure 24, the shaft hole 240 is tangent to the upper end surface of the clamping head I201, and the center line of the rotating shaft 240 is tangent to the bottom of the transverse groove 2110 of the clamping surface 211, so that the rotation center of the pressing handle 241 is always aligned with the clamped gram. The Kirschner wire is tangent. After the rotating hole 240 is matched with the rotating shaft 230, the handle 241 is rotated and pressed. The Kirschner wire is bent around the clamping head Ⅱ202. The hook shape is the smallest.

The pressing shaft 230 is a cylindrical boss on the side of one end of the pressing head 231, which is detachable and convenient for cleaning before and after use. The other end of the pressing shaft is connected with the indenter 231 as a whole,

The indenter 231 is provided with a contact 2312, and the indenter includes a contact or only a contact for bending. The limit groove 2320 is set in the indenter 231, and the limit groove 2320 is always tangent to the Kirschner wire. During the process of rotating the indenter 231 to press the Kirschner wire into a hook shape, the Kirschner wire always passes through both the transverse groove 2110 and the K-wire. Through the annular groove 2320, the relative position of the shaft hole 240 and the pressing shaft 230 during relative rotation is always restricted (that is, locked), and the pressing shaft 230 is prevented from coming out of the shaft hole 240. The length of the limiting groove 2320 is the shortest. During the process of pressing the Kirschner wire into a hook shape by the rotating indenter 231, the annular groove 2320 is always in contact with the Kirschner wire.

The inner surface 2311 on the indenter 231 may be an arc-shaped surface or a flat surface. When a Kirschner wire with a larger diameter is clamped, the arc-shaped surface has a larger curvature, and the arc-shaped surface 2311 may be provided with a guide groove.

The contact 2312 is provided with a pressing groove 2310 matched with the horizontal groove 2110. The cross section of the annular groove 2320 and the transverse groove 2110 is U-shaped, and the cross section of the pressing groove 2310 may be rectangular, U-shaped, semi-circular, or small semi-circular. The small semicircle means that the arc line of the annular groove or the transverse groove is smaller than the arc line of the semicircle. In the process of pressing the Kirschner wire into a hook shape, the pressing groove 2310 is always tangent to the Kirschner wire, and the pressing groove 2310 limits the Kirschner wire to the greatest extent without lateral twisting during the bending and deformation of the Kirschner wire. Press the Kirschner wires into a regular hook shape.

Generally speaking, there will be no axial force separating the indenter from the pliers mouth. When the force is large, when the direction of the force is deviated, the axial force of the indenter and the pliers mouth will be generated. At this time, the Kirschner wire is stuck in the horizontal direction at the same time. In the groove and the limiting groove, the Kirschner wire restricts the separation of the limiting groove from the horizontal groove. Since the limiting groove is integrated with the indenter, it limits the indenter from separating from the jaw.

During the bending process, the shaft 230 rotates around the shaft hole 240. When the pliers mouth clamps the Kirschner wire through the horizontal groove 2110, the Kirschner wire is stuck in the horizontal groove, and the Kirschner wire is also stuck in the limiting groove, restricting The indenter is separated from the jaws, as long as the position of the shaft is selected appropriately, the Kirschner wire can be held into a regular hook shape.

The hole 240 or the shaft 230 is used to cooperate and connect the pressing handle 241, and the integral structure of the indenter 231, the contact 2312 and the pressing handle 241 connected by the hole 240 or the shaft 230 may also be detached components.

As shown in Figure 25, a Kirschner wire surgical forceps includes two cheek rotating parts that rotate relative to each other, cheek rotating part I101 and cheek rotating part II102, cheek rotating part I101 and cheek rotating part II102 are respectively extended to one end Out of the clamping head I201 and the clamping head II202, the clamping head I201 and the clamping head II202 constitute the opening and closing jaws 260; the cheek rotating part I101 and the cheek rotating part II102 respectively extend the handle I301 and the handle II302 to the other end , One of the two clamping heads I201 is provided with a transverse groove surface. In fact, the transverse groove surface directly protrudes from the rotating part of the gill. Since the distance between the transverse groove holding the Kirschner wire and the axis of the rotating shaft of the gill is short, the gripping of the Kirschner wire saves effort and is easy to clamp. When the Kirschner wire is bent in this way, the horizontal groove 2110 of the clamping surface of the clamping head 201 restricts the Kirschner wire, and the Kirschner wire is bent around another clamping head Ⅱ202. The end of the clamping head Ⅱ202 is thinner than the root. And the surface is smooth, which is convenient for the Kirschner wire to come out after bending.

The horizontal groove 2110 of the clamping head I201 limits the Kirschner wire, and the horizontal groove 2110 is a small semicircular groove. The small semicircle means that the arc line of the annular groove or the transverse groove is smaller than the arc line of the semicircle. The small semi-circular groove can hold Kirschner wires of various diameter ranges, but when holding the small diameter Kirschner wires, the Kirschner wires will slide in the vertical direction of the horizontal groove 2110.

A shaft hole 240 is provided on the clamping head I201 with the clamping surface 211 or the gill 102 extending from the clamping head I201, and the shaft hole 240 is a blind hole. The extension direction of the pressing shaft 230 is consistent with the direction of the shaft hole 240. A pressing head 231 is provided on the pressing shaft 230, and a pressing handle 241 is connected to the pressing head 231. During the rotation of the pressing handle 241 around the pressing shaft 230, the pressing head 231 can press the clamped K-wire into a hook shape. Needle bending pliers.

The pressing shaft 230 is a cylindrical boss on the side of one end of the pressing head 231, which is detachable and convenient for cleaning before and after use. The other end of the pressing shaft is connected to the indenter 231 as a whole. The indenter 231 is provided with a contact 2312, and the indenter includes a contact or only a contact for bending.

A small semicircular limiting groove 2320 and a Kirschner wire limiting protrusion 2330 are provided in the indenter 231. The inner side of the limiting protrusion 2330 is connected to the limiting groove 2320 as a whole, and the length of the protrusion exceeds the position of the central axis of the Kirschner wire, so that During the process of rotating the indenter 231 to press the Kirschner wire into a hook shape, the Kirschner wire always passes through the transverse groove 2110 as well as the small semicircular groove 2320 and the inner side of the limiting protrusion 2330. The limiting protrusion 2330 is always tangent to the Kirschner wire, restricts the relative position of the shaft hole 240 and the pressing shaft 230 during relative rotation, and prevents the pressing shaft 230 from coming out of the shaft hole 240. The length of the limiting groove 2320 is the shortest. During the process of pressing the Kirschner wire into a hook shape by the rotating indenter 231, the annular groove 2320 is always in contact with the Kirschner wire.

Optionally, as shown in FIG. 26 and FIG. 27, the limiting protrusion 2330 and the indenter 231 are connected as a whole, which increases the strength of the indenter 231.

The limiting groove 2320 and the pressing groove 2310 may be circular, U-shaped or rectangular. The depth of the limiting groove 2320 is greater than or equal to the depth of the transverse groove 2110 of the clamping surface 211 of the clamping head I201, and the width is smaller than the thickness of the indenter 231.

The contact 2312 is provided with a pressing groove 2310, so that when the pressing groove 2310 presses the Kirschner wire into a hook shape, the pressing groove 2310 is always tangent to the Kirschner wire to limit the Kirschner wire and limit the bending deformation of the Kirschner wire to the greatest extent. During the process, no lateral twisting occurs, and the Kirschner wires are pressed into a regular hook shape.

Generally speaking, there will be no axial force separating the indenter from the pliers mouth. When the force is large, when the direction of the force is deviated, the axial force of the indenter and the pliers mouth will be generated. At this time, the Kirschner wire is stuck in the horizontal direction at the same time. In the groove and the limiting groove, the Kirschner wire restricts the separation of the limiting groove from the horizontal groove. Since the limiting groove is integrated with the indenter, it limits the indenter from separating from the jaw. During the bending process, the shaft rotates around the shaft hole, and when the pliers mouth clamps the Kirschner wire through the horizontal groove, the Kirschner wire is stuck in the horizontal groove, and the Kirschner wire is also stuck in the limit groove, limiting the indenter and The jaws of the pliers are separated, and the Kirschner wire can be held into a regular hook shape as long as the position of the shaft is appropriately selected.

The 240 hole or the shaft 230 is used to cooperate and connect the pressing handle 241, and the integral structure of the indenter 231, the contact 2312 and the pressing handle 241 connected with the hole 240 or the shaft 230 may also be detached components.

As shown in Figure 24, a Kirschner wire surgical forceps includes two cheek rotating parts that rotate relatively, cheek rotating part Ⅰ101 and cheek rotating part Ⅱ102, cheek rotating part Ⅰ101 and cheek rotating part Ⅱ102 are respectively extended to one end Out of the clamping head I201 and the clamping head II202, the clamping head I201 and the clamping head II202 constitute the opening and closing jaws 260; the cheek rotating part I101 and the cheek rotating part II102 respectively extend the handle I301 and the handle II302 to the other end , One of the two clamping heads I201 is provided with a transverse groove surface. In fact, the transverse groove surface directly protrudes from the rotating part of the gill. Since the distance between the transverse groove holding the Kirschner wire and the axis of the rotating shaft of the gill is short, the gripping of the Kirschner wire saves effort and is easy to clamp. When the Kirschner wire is bent in this way, the horizontal groove 2110 of the clamping surface of the clamping head 201 restricts the Kirschner wire, and the Kirschner wire is bent around another clamping head Ⅱ202. The end of the clamping head Ⅱ202 is thinner than the root. And the surface is smooth, which is convenient for the Kirschner wire to come out after bending.

The clamping head I201 with the clamping surface 211 or the gill 102 protruding from the clamping head I201 is provided with a shaft hole 240, and the shaft hole 240 is a blind hole. The extension direction of the pressing shaft 230 is consistent with the direction of the shaft hole 240. A pressing head 231 is provided on the pressing shaft 230, and a pressing handle 241 is connected to the pressing head 231. During the rotation of the pressing handle 241 around the pressing shaft 230, the pressing head 231 can press the clamped K-wire into a hook shape. Needle bending pliers.

The shaft hole 240 is tangent to the upper end surface of the clamping head I201, and the center line of the rotating shaft 240 is tangent to the bottom of the horizontal groove 2110 of the clamping surface 211, so that when the small diameter Kirschner wire is clamped, the rotation center of the pressing handle 241 is always aligned with the clamping The holding Kirschner wire is tangent, the rotating hole 240 is matched with the rotating shaft 230, and then the handle 241 is rotated and pressed. The Kirschner wire is bent around the clamping head Ⅱ202. During the entire deformation process, the rotation center of the rotating shaft is always away from the central axis of the bending rotation of the Kirschner wire. Recently, the hook has the smallest shape.

The indenter 231 is provided with a limiting groove 2320 and a Kirschner wire limiting protrusion 2330. The inner side of the limiting protrusion 2330 is connected with the limiting groove 2320 as a whole, and the length of the protrusion exceeds the position of the central axis of the Kirschner wire, so that the indenter is rotated In the process of pressing the Kirschner wire into a hook shape by 231, the Kirschner wire always passes through the transverse groove 2110 and the inner side of the groove 2320 and the limiting protrusion 2330. The limiting protrusion 2330 is always tangent to the Kirschner wire, restricts the relative position of the shaft hole 240 and the pressing shaft 230 during relative rotation, and prevents the pressing shaft 230 from coming out of the shaft hole 240. The length of the limiting groove 2320 is the shortest. During the process of pressing the Kirschner wire into a hook shape by the rotating indenter 231, the annular groove 2320 is always in contact with the Kirschner wire.

As shown in FIG. 28, the horizontal groove 2110 is a special-shaped groove, and a pressing groove 2310 matching the horizontal groove 2110 is provided on the contact 2312. The said special-shaped groove is the arc line of the transverse groove of the groove surface is formed by combining two or more arc lines smaller than a semicircle. As shown in Fig. 31, the pliers mouth 260 clamps a partial enlarged view of steel needles of different diameters. Using this special-shaped groove can hold Kirschner wires with a larger diameter range, and slide in the vertical direction of the horizontal groove 2110 is small or even does not slide.

The cross section of the annular groove 2320 and the pressing groove 2310 may be rectangular, U-shaped, semi-circular, or small semi-circular. The small semicircle means that the arc line of the annular groove or the transverse groove is smaller than the arc line of the semicircle. In the process of pressing the Kirschner wire into a hook shape, the pressing groove 2310 on the contact is always tangent to the Kirschner wire, and the pressing groove 2310 limits the Kirschner wire to the greatest extent restricting the Kirschner wire from bending and deforming. Twist toward, press the Kirschner wire into a regular hook shape.

During the bending process, the shaft rotates around the shaft hole, and when the pliers mouth clamps the Kirschner wire through the horizontal groove, the Kirschner wire is stuck in the horizontal groove, and the Kirschner wire is also stuck in the limit groove, limiting the indenter and The jaws of the pliers are separated, and the Kirschner wire can be held into a regular hook shape as long as the position of the shaft is appropriately selected.

The 240 hole or the shaft 230 is used to cooperate with the pressing handle 241, and the integral structure of the pressing head 231, the contact 2312 and the pressing handle 241 connected with the hole 240 or the shaft 230 may also be detached parts.

Example: As shown in Figure 23 and Figure 24, a Kirschner wire surgical forceps, including two cheek rotating parts that rotate relative to each other, cheek rotating part Ⅰ101 and cheek rotating part Ⅱ102, cheek rotating part Ⅰ101 and cheek rotating part The part Ⅱ102 extends to one end of the clamping head 201 and the clamping head Ⅱ202 respectively. The clamping head 201 and the clamping head Ⅱ202 constitute the opening and closing jaws 260; the cheek rotating part Ⅰ101 and the cheek rotating part Ⅱ102 respectively extend to the other end The handle I301 and the handle II302 are taken out, and one of the two clamping heads I201 is provided with a transverse groove surface. In fact, the transverse groove surface directly protrudes from the rotating part of the gill. Since the distance between the transverse groove holding the Kirschner wire and the axis of the rotating shaft of the gill is short, the gripping of the Kirschner wire saves effort and is easy to clamp. When the Kirschner wire is bent in this way, the horizontal groove 2110 of the clamping surface of the clamping head 201 restricts the Kirschner wire, and the Kirschner wire is bent around another clamping head Ⅱ202. The end of the clamping head Ⅱ202 is thinner than the root. And the surface is smooth, which is convenient for the Kirschner wire to come out after bending.

As shown in Figure 29, the clamping head I201 with the clamping surface 211 or the cheek 102 protruding from the clamping head I201 is provided with a pressing shaft 230. The direction of the pressing shaft 230 is the same as that of the clamping head with the clamping surface 211. The extension direction of I201 is the same. In this way, an indenter 231 is sleeved on the pressing shaft 230, and a contact 2312 is arranged on the indenter 231, and the indenter includes a contact or only a contact for bending. A pressing handle 241 is connected to the indenter 231, and the indenter 231 can press the clamped Kirschner wire into a hook shape, forming a Kirschner wire bending pliers at this time.

The pressing shaft 230 is sleeved with a pressing head 231, and the pressing head 231 is provided with a shaft hole 2300 matched with the pressing shaft 230 and connected with a pressing handle 241. The shaft hole 2300 is a blind hole. The rotating press head 231 can press the clamped Kirschner wire into a hook shape, and at this time constitutes a Kirschner wire bending pliers.

The shaft hole 2300 of the indenter 231 forms a part of an annular sleeve 232 on the periphery, and a section of annular groove 2320 is arranged on the outer side of the part of the sleeve 232. The groove bottom center line of the annular groove 2320 and the transverse groove 2110 on the clamping surface 211 are centered on the groove bottom. The line is tangent. The length of the limiting groove 2320 is the shortest. During the process of pressing the Kirschner wire into a hook shape by the rotating indenter 231, the annular groove 2320 is always in contact with the Kirschner wire. With this structure, when the shaft hole 2300 of the indenter 231 is mated with the pressing shaft 230, the center line of the groove bottom of the annular groove 2320 is tangent to the center line of the groove bottom of the transverse groove 2110 on the clamping surface 211. The needle passes through both the transverse groove 2110 and the annular groove 2320 to restrict (that is, lock) the relative position of the shaft hole 2300 and the pressing shaft 230 during relative rotation, and prevent the shaft hole 2300 from coming out of the pressing shaft 230.

Optionally, as shown in FIG. 30, the pressing shaft 230 is sleeved with a pressing head 231, and the pressing head 231 is provided with a shaft hole 2300 matched with the pressing shaft 230 and connected with a pressing handle 241, and the shaft hole 2300 is a through hole. After the indenter is installed on the shaft, the outer end surface of the rotating shaft 230 is flush with the outer end surface of the indenter 231. The outer ring of the shaft hole is a shaft sleeve 232, a limiting groove 2320 is provided on the shaft sleeve, and a limiting groove 2310 is provided on the contact 2311. During the bending process, the shaft sleeve rotates around the axis, and when the pliers mouth clamps the Kirschner wire through the horizontal groove, the Kirschner wire is stuck in the horizontal groove, and the Kirschner wire is also stuck in the limiting groove, limiting the indenter and The jaws are separated.

The length of the limiting groove 2320 is the shortest. During the process of pressing the Kirschner wire into a hook shape by the rotating indenter 231, the annular groove 2320 is always in contact with the Kirschner wire. With this structure, when the rotary press head 231 presses the Kirschner wire into a hook shape, the Kirschner wire always passes through both the transverse groove 2110 and the annular groove 2320, and always restricts (that is, locks) the shaft hole 2300 and the pressing The relative position of the rotating shaft 230 during the relative rotation prevents the shaft hole 2300 from coming out and pressing the rotating shaft 230.

A pressing groove 2310 is provided on the contact. In the process of pressing the Kirschner wire into a hook shape, the pressing groove 2310 always limits the Kirschner wire and presses the Kirschner wire into a regular hook shape.

The shaft hole or the shaft 230 matched with it is used to cooperate and connect the pressing handle 241, and the integral structure of the indenter 231, the contact 2312 and the pressing handle 241 connected to the hole or the shaft 230 may also be detached components.

Embodiment: A method for positioning the hole or shaft of Kirschner wire surgical forceps, including the following steps:

As shown in Figure 32, the Kirschner wire with the length of πa is a straight line from point O (0, 0) to point A (0, πa) in the X, Y coordinate system. After bending, the shape in the X, Y coordinate system is a semicircle with point B (-a, 0) as the center, a as the radius, and in the second quadrant. One end of the semicircle is point O, and the other end is point C (-2a, 0).

(1) The starting point of the bending contact is always on the line segment OA, and the ending point of the bending contact is at point C, then the axis satisfies the equation:

That is: 4ax+2hy=h ² -4a ² ; h∈(0,πa) ①

(2) Select the distance from the axis to point C equal to the distance from the axis to the line segment OA, then the axis satisfies the equation:

That is: y ² +4a ² +4ax=0; ②

(3) For equation ①, take h=0, then x=-a is the BL straight line;

Take h=πa, then 4x+2πy=πa ² -4a;

Considering that after bending, there is a molded core block in the semicircle and cannot interfere with the contact,

Take y y∈(0, πa) for the equation ②, then the drawing is the hyperbola between BN;

So the range of the axis is: the area surrounded by BN, NL, LP, PM, and MB.

Among them, Q point is the intersection of BN hyperbola and AC, P point is the intersection of straight lines AC, BL, MN; D is the intersection of straight lines MN and OA.

In order to keep the contact point away from the bending end of the Kirschner wire during the bending process, the range of the axis is selected as the area surrounded by BQ, QP, PM, and MB.

Since the movement path of the bending end of the Kirschner wire is the involute between AC during the bending of the Kirschner wire, the distance from the axis to the involute is greater than the axis to C if the contact can always contact the Kirschner wire. The distance between the points, the range of the axis is the area enclosed by BQ, QD, DM, and MB.

The above method to determine the range of the axis is affected by the shape of the core block (bending shape) and the diameter of the Kirschner wire, and the range of the axis should be expanded to the periphery of the above range. Sometimes a guide groove is provided in the indenter, which can also make the shaft center out of the above range.

Claims

A Kirschner wire surgical forceps, comprising two cheek rotating parts that rotate relative to each other, each cheek rotating part extends a clamping head to one end, and the two clamping heads form an opening and closing jaw; each cheek A handle is extended from the rotating part to the other end, which is characterized in that: the two clamping heads constitute opening and closing jaws, one of the two clamping heads is provided with a rotating pair, and the extension of the rotating pair The direction is consistent with the extension direction of the clamping head with the rotating pair, and the clamping head with the rotating pair is provided with a horizontal groove clamping surface.
The Kirschner wire surgical forceps according to claim 1, characterized in that: the rotating pair or the holding head of the rotating pair or the rotating part of the cheek part extending out of the holding head is provided with a pressing rotating shaft, and pressing the rotating shaft The extension direction is consistent with the extension direction of the clamping head provided with the rotating pair.
The Kirschner wire surgical forceps according to claim 2, wherein the pressing shaft is sleeved with an indenter, and the indenter is provided with a shaft hole matched with the pressing shaft and connected with a pressing handle.
The Kirschner wire surgical forceps according to claim 3, wherein the pressing shaft is a part of the clamping head.
The Kirschner wire surgical forceps according to claim 4, wherein the pressing shaft is coaxial with the clamping head.
The Kirschner wire surgical forceps according to any one of claims 1 to 5, wherein the two rotating parts of the cheeks are hinged structures.
The Kirschner wire surgical forceps according to any one of claims 1 to 5, wherein each cheek rotating part includes a rotating shaft and a rotating shaft sleeve extending outside the periphery of the rotating shaft, and two cheeks The rotating shaft of the rotating part is placed in the rotating shaft sleeve of the other side, so that the two rotating shaft sleeves of the two gill part rotating parts are mutually provided with rotating shafts, and the rotating shafts extend out of the clamping head, forming an infinite effort saving clamping pliers.
The Kirschner wire surgical forceps according to claim 7, characterized in that: the rotating shaft extends out of the pressing rotating shaft, at this time, it constitutes a labor-saving Kirschner wire bending forceps.
The Kirschner wire surgical forceps according to claim 1, characterized in that: each cheek rotating part includes a rotating shaft and a rotating shaft sleeve extending outside the periphery of the rotating shaft, and the rotation of the two cheek rotating parts The shaft is placed in the rotating shaft sleeve of the other side, so that the two rotating shaft sleeves of the rotating parts of the two gills are mutually provided with rotating shafts, and the rotating shaft is provided with a cutting edge instead of a clamping head, forming an infinite labor-saving cutter.
The Kirschner wire surgical forceps according to claim 9, wherein the blade on one side of the cutting edge is L-shaped.
The Kirschner wire surgical forceps according to claim 1, characterized in that: the two cheek rotating parts that rotate relative to each other, one cheek rotating part is a sleeve extending from the base to the periphery, and the other cheek rotating part The rotating part is a rotating shaft matched with the shaft sleeve, and the pliers head is a truncated through hole arranged parallel to the axis on the base and the rotating shaft instead of each cheek rotating part extending a pliers head to one end.
The Kirschner wire surgical forceps according to claim 11, wherein the number of the truncated through holes is at least two, and the diameters are different.
The Kirschner wire surgical forceps according to claim 3, characterized in that: the outer periphery of the shaft hole of the indenter forms a part of a circular ring, and a section of annular groove is arranged on the outer side of the part of the circular ring. The center line of the bottom of the transverse groove on the groove clamping surface is tangent.
The Kirschner wire surgical forceps according to claim 13, characterized in that: the length of the annular groove is the shortest. When the rotary indenter presses the Kirschner wire into a hook shape, the annular groove is always Contact with Kirschner wires.
The Kirschner wire surgical forceps according to claim 14, wherein the pressing head is provided with a pressing groove matched with the horizontal groove.
The Kirschner wire surgical forceps according to claim 15, wherein the cross section of the annular groove or the transverse groove or the pressing groove is rectangular, U-shaped, semi-circular and small semi-circular.
A Kirschner wire surgical forceps indenter according to claim 2, characterized in that: the indenter is provided with a shaft hole that matches with the pressing shaft and is connected with the pressing handle, and the outer periphery of the shaft hole of the indenter forms a part of a circular ring, A section of annular groove is arranged on the outer side of part of the circular ring, and the center line of the bottom of the annular groove is tangent to the center line of the bottom of the transverse groove on the clamping surface of the transverse groove; When the needle is pressed into a hook shape, the annular groove of this section is always in contact with the K-wire.
The Kirschner wire surgical forceps indenter according to claim 17, wherein the indenter is provided with a pressing groove that is matched with the transverse groove.
The Kirschner wire surgical forceps according to claim 1, characterized in that: one of the two cheek rotating parts is provided with a hole or a shaft, or one of the clamping heads protruding from the cheek rotating part is provided with a hole or Shaft, or rotating pair set hole or shaft.
The Kirschner wire surgical forceps according to claim 19, characterized in that the axis of the hole or the shaft is consistent with the extension direction of the forceps head.
The Kirschner wire surgical forceps according to claim 19 or 20, characterized in that: one of the two cheek rotating parts or one of the jaws extending from the cheek rotating part or the rotating auxiliary setting hole or shaft A clearance fit rotating shaft or sleeve, the rotating shaft or sleeve is connected to one end of the indenter, and the other end of the indenter protrudes out of the contact and is connected to the pressing handle. The indenter includes contacts or only contacts for bending.
The Kirschner wire surgical forceps according to claim 21, wherein the hole is provided in one of the rotating parts of the two cheeks, and the part of the rotating shaft that fits with the hole is provided with a limit on the outer periphery of the hole. Position groove. During the bending process of the limit groove, the shaft rotates in the hole. When the pliers mouth clamps the Kirschner wire through the horizontal groove, the Kirschner wire is stuck in the horizontal groove, and the Kirschner wire is also stuck in the limit. In the groove, the indenter is restricted from separating from the jaw.
The Kirschner wire surgical forceps according to claim 21, characterized in that: the shaft is arranged at one of the rotating parts of the two gills, and the outer periphery of the sleeve that is in clearance fit with the shaft is provided with a limit groove, and during the bending process When the shaft sleeve rotates around the axis and the pliers mouth clamps the Kirschner wire through the horizontal groove, the Kirschner wire is stuck in the horizontal groove, and the Kirschner wire is also stuck in the limiting groove, restricting the indenter from separating from the jaw.
The Kirschner wire surgical forceps according to claim 23, wherein the inner side of the indenter is provided with a guide groove, so that the initial state of the bent end of the Kirschner wire is in one end of the guide groove, and during the bending process The middle guide groove restricts the bent end of the Kirschner wire from coming out, and the final guide groove restricts the bent end of the Kirschner wire from sliding to the contact in the guide groove, and the contact ultimately bends the Kirschner wire.
The Kirschner wire surgical forceps according to claim 21, wherein the hole or the shaft is provided in one of the two forceps heads.
The Kirschner wire surgical forceps according to claims 19-24, characterized in that the end of the other clamping head is thinner than the root, and the surface is smooth.
A method for positioning the hole or shaft of Kirschner wire surgical forceps, including the following steps:

The Kirschner wire with the length of πa is a straight line from point O (0,0) to point A (0,πa) in the X, Y coordinate system, and the shape in the X, Y coordinate system after bending is Point B (-a, 0) is the center of the circle, with a as the radius, in the second quadrant of the semicircle, one end of the semicircle is point O, and the other end is point C (-2a, 0);

(1) The starting point of the bending contact is always on the line segment OA, and the ending point of the bending contact is at point C, then the axis satisfies the equation:

That is: 4ax+2hy=h 2 -4a 2 h∈(0,πa) ①

(2) Select the distance from the axis to point C equal to the distance from the axis to the line segment OA, then the axis satisfies the equation:

That is: y 2 +4a 2 +4ax=0 ②

(3) Taking h=0 for equation ①, then x=-a, the drawing is the BL straight line;

Take h=πa, then 4x+2πy=πa 2 -4a;

Considering that after bending, there is a molded core block in the semicircle and cannot interfere with the contact,

Take y∈(0,πa) for the equation ②, then the drawing is the hyperbola between BN;

So the range of the axis is: the area surrounded by BN, NL, LP, PM, MB;

Among them, Q point is the intersection of BN hyperbola and AC, P point is the intersection of straight lines AC, BL, MN; D is the intersection of straight lines MN and OA.
The method for positioning the hole or the axis of the Kirschner wire surgical forceps according to claim 27, characterized in that: in order to keep the contact point away from the bent end of the Kirschner wire during the bending process, the axis is selected The range is: the area surrounded by BQ, QP, PM, MB.
The method for positioning the hole or shaft of the Kirschner wire surgical forceps according to claim 28, wherein the moving path of the bending tip during the bending of the Kirschner wire is the involute opening between AC If the contact can always contact the Kirschner wire, the distance from the axis to the involute is greater than the distance from the axis to the point C, and the range of the axis is the area enclosed by BQ, QD, DM, and MB.
The Kirschner wire surgical forceps according to claim 3, characterized in that: the jaws are provided with a structure that restricts the sleeve from coming out of the pressing shaft, and the pressing shaft forming the jaws is provided with a transverse groove for holding the Kirschner wires. The shaft sleeve is located between the root of the rotating shaft and the transverse groove.
The Kirschner wire surgical forceps according to claim 30, wherein the sleeve is located between the root of the pressing shaft and the transverse groove, and only one sleeve is located between the root of the pressing shaft and the transverse groove.
The Kirschner wire surgical forceps according to claim 30, wherein the sleeve is radially provided with an annular slot, and the bottom of the annular slot is matched with the horizontal groove.
The Kirschner wire surgical forceps according to any one of claims 30-32, characterized in that: the root of the other clamping head is provided with a limiting groove, and when the jaws of the forceps clamp the Kirschner wire, the shaft sleeve or part of the The sleeve extends into the limit slot.