阅读说明：本技术 多功能新型双动杯植入器 (Multifunctional double-action cup implanting device ) 是由 李锰霏 黄飞鹏 黄建峰 吴震宇 于 2019-11-04 设计创作，主要内容包括：本发明公开了一种多功能新型双动杯植入器,包括底座、夹爪、杆套和内杆,夹爪安装在底座上,夹爪包括能够活动的活动件和均布在活动件周围的至少两个夹臂,夹臂的两端之间具有支点,夹臂的一端向活动件延伸,另一端背向活动件延伸且该端具有爪头,活动件推动夹臂绕支点转动夹持双动杯,活动件上设有沿活动方向延伸的第一螺纹孔,杆套一端能够与底座连接,内杆插入杆套,内杆被配置为在长度方向上不能运动,内杆能够绕其中轴线转动,内杆的端部具有外螺纹并伸出杆套,在杆套与底座装配状态下,内杆的端部与第一螺纹孔螺纹连接。本发明的植入器从双动杯外侧施加夹紧力,能够牢固夹持双动杯,且兼具传递击打力量的功能。(The invention discloses a novel multifunctional double-acting cup implanter which comprises a base, a clamping jaw, a rod sleeve and an inner rod, wherein the clamping jaw is installed on the base and comprises a movable part and at least two clamping arms uniformly distributed around the movable part, a fulcrum is arranged between two ends of each clamping arm, one end of each clamping arm extends towards the movable part, the other end of each clamping arm extends back to the movable part, the end of each clamping arm is provided with a claw head, the movable part pushes each clamping arm to rotate around the fulcrum to clamp a double-acting cup, the movable part is provided with a first threaded hole extending along the movable direction, one end of the rod sleeve can be connected with the base, the inner rod is inserted into the rod sleeve and is configured to be incapable of moving in the length direction, the inner rod can rotate around the central axis of the inner rod, the end of the inner rod is provided with external threads and extends. The implanter of the invention applies clamping force from the outer side of the double-acting cup, can firmly clamp the double-acting cup and has the function of transmitting impact force.)

1. Multifunctional novel double-acting cup implanter, characterized in that, include:

a base;

the clamping jaw is installed on the base and comprises a movable part and at least two clamping arms uniformly distributed around the movable part, a fulcrum is arranged between two ends of each clamping arm, one end of each clamping arm extends towards the movable part, the other end of each clamping arm extends back to the movable part, the end of each clamping arm is provided with a claw head, the movable part pushes the clamping arms to rotate around the fulcrum to clamp the double-acting cup, and the movable part is provided with a first threaded hole extending along the movable direction;

one end of the rod sleeve can be connected with the base; and

the inner rod is inserted into the rod sleeve and configured to be immovable in the length direction, the inner rod can rotate around the central axis of the inner rod, the end portion of the inner rod is provided with an external thread and extends out of the rod sleeve, and the end portion of the inner rod is in threaded connection with the first threaded hole in the assembled state of the rod sleeve and the base.

2. The multi-functional double-acting cup implanter of claim 1, wherein the base has a receiving chamber for receiving the movable member and a channel connected to the receiving chamber and extending laterally, the clamping arm being hinged to the channel by a cylindrical pin, the hinge point being the fulcrum.

3. The multi-functional double-acting cup implanter of claim 2, wherein the base comprises a first portion and a second portion, the first portion having a first protrusion on a bottom thereof and a second protrusion on a surface thereof, the second protrusion having a second groove adapted to the first protrusion, the first protrusion having an interference fit with the second groove.

4. The multi-functional double-acting cup implanter of claim 3, wherein the first portion is cross-shaped, wherein two opposing arms of the cross-shape are used to mount the clamping arms, and wherein the other two opposing arms are provided at their ends with positioning posts for forming a positioning structure with the shape of the mouth of the double-acting cup.

5. The multi-functional double-action cup implanter of claim 3, wherein the bottom surface of the second portion is provided with a second ledge, the second ledge having a force-bearing surface formed therearound.

6. The multi-functional double-action cup implanter of claim 1, wherein the movable member has a first recess on a side thereof corresponding to the clamping arm, and wherein one end of the clamping arm extends into the first recess.

7. The multifunctional double-action cup implanter of claim 1, wherein a third groove is formed in the side surface of the movable member, and a first lateral limit pin is disposed on the base, and an end of the first limit pin extends into the third groove.

8. The multi-functional double-acting cup implanter of claim 1, wherein both ends of the inner rod extend out of both ends of the rod sleeve, one end of the inner rod has external threads, the other end has a handle, the handle or the inner rod is provided with an annular groove at its periphery, the rod sleeve is provided with a second limit pin extending laterally towards the lumen of the rod sleeve, and the second limit pin extends into the annular groove.

9. The multifunctional double-acting cup implanter of claim 1, wherein the base has a second threaded hole connected to the receiving chamber and extending in the direction of movement of the movable member, and the end of the rod sleeve is threadedly connected to the second threaded hole.

10. The multifunctional double-acting cup implanter of claim 1, wherein the rod sleeve is sleeved with a rubber sleeve or a silicone sleeve.

Technical Field

The invention relates to the field of implantation of orthopedic implants, in particular to a novel multifunctional double-acting cup implanter.

Background

The double-acting cup hip joint is a bionic prosthesis with double articular surfaces, which is designed by professor Bousquet of france in the 70 th 20 th century. The double-acting cup is held and fed into the body by means of a holding instrument and then fixed to the implantation site by striking the double-acting cup with a further striking instrument. Referring to fig. 8, the action part of the conventional clamping device is located inside the rim of the double-acting cup, and the clamping device applies an outward expanding force (as shown by the arrow in fig. 8) to the double-acting cup, so that the inner side of the rim of the double-acting cup must be made linear to hold the double-acting cup, but the inner wall of the double-acting cup and the pad are subjected to large frictional wear after the pad is mounted.

Disclosure of Invention

To address the above-discussed deficiencies of the prior art, the present disclosure provides a novel multi-functional double-acting cup implanter. Other advantages of the disclosed implants can be derived from the disclosed features.

According to one aspect of the present disclosure, there is provided a novel multi-functional double-acting cup implanter comprising:

a base;

the clamping jaw is arranged on the base and comprises a movable part and at least two clamping arms uniformly distributed around the movable part, a fulcrum is arranged between two ends of each clamping arm, one end of each clamping arm extends towards the movable part, the other end of each clamping arm extends back to the movable part and is provided with a jaw head, the movable part pushes the clamping arms to rotate around the fulcrums to clamp the double-acting cup, and the movable part is provided with a first threaded hole extending along the movable direction;

one end of the rod sleeve can be connected with the base; and

the inner rod is inserted into the rod sleeve and configured to be incapable of moving in the length direction, the inner rod can rotate around the central axis of the inner rod, the end portion of the inner rod is provided with an external thread and extends out of the rod sleeve, and the end portion of the inner rod is in threaded connection with the first threaded hole in the assembly state of the rod sleeve and the base.

The beneficial effects of the embodiment are as follows: the clamping jaw applies clamping force from the outer side of the double-acting cup, the inner side of the cup mouth of the double-acting cup does not need to be made into a straight line shape, and large friction and abrasion between the double-acting cup and the gasket are avoided; the implanter can firmly clamp the double-acting cup, and a doctor can send the double-acting cup into a human body by holding the rod sleeve by hand; the rod sleeve and the inner rod can also transmit striking force, namely the implanter has the functions of clamping and striking; the implanter disclosed by the invention is firm in clamping, and the double-acting cup is not easy to fall off from the clamping jaw in the striking process; the movable part pushes the clamping arm to rotate by rotating the inner rod, so that the claw head clamps the double-acting cup, and the operation of clamping the double-acting cup is labor-saving and convenient.

In some embodiments, the base has a receiving cavity for receiving the movable member and a channel connected to the receiving cavity and extending laterally, and the clamping arm is hinged in the channel by a cylindrical pin, and the hinge point is a fulcrum. The clamp arm has the beneficial effect that the clamp arm can rotate around the fulcrum.

In some embodiments, the base comprises a first part and a second part, wherein the bottom of the first part is provided with a first boss, the surface of the second part is provided with a second groove matched with the first boss, and the first boss is in interference fit with the second groove. The base has the advantages that the base is divided into two parts, so that the base is formed conveniently, the two parts are made of different materials, for example, the second part can be made of plastic, and the base can play a role in buffering when being hit.

In some embodiments, the first portion is in the shape of a cross, wherein two opposing arms of the cross are used to mount the clamping arms, and the other two opposing arms are provided with positioning posts at their ends, which are used to form a positioning structure with the shape of the mouth of the double-action cup. The positioning structure has the beneficial effects that the positioning column is used for forming a positioning structure with the shape of the cup mouth of the double-acting cup, so that the claw head and the double-acting cup are quickly positioned.

In some embodiments, the bottom surface of the second portion is provided with a second boss, and a force bearing surface is formed around the second boss. The double-action cup has the beneficial effects that when the double-action cup is beaten, the beating force is transmitted to the double-action cup through the stress surface, so that the double-action cup is embedded into an implantation part.

In some embodiments, the side surface of the movable member is provided with a first groove corresponding to the clamping arm, and one end of the clamping arm extends into the first groove. Its beneficial effect is when the moving part motion, can promote the arm lock and rotate.

In some embodiments, a third groove is formed in the side surface of the movable member, a lateral first limit pin is arranged on the base, and the end of the first limit pin extends into the third groove. The double-action cup clamping device has the advantages that the moving stroke of the moving part is limited, and the double-action cup is prevented from being clamped and deformed due to excessive movement of the moving part.

In some embodiments, both ends of the inner rod extend out of both ends of the rod sleeve, one end of the inner rod is provided with external threads, the other end of the inner rod is provided with a handle, the periphery of the handle or the inner rod is provided with an annular groove, the rod sleeve is provided with a second limit pin extending towards the side direction of the tube cavity of the rod sleeve, and the second limit pin extends into the annular groove. The inner rod has the beneficial effect that the inner rod can rotate but cannot move along the length direction.

In some embodiments, the base is provided with a second threaded hole connected with the accommodating cavity and extending along the moving direction of the movable piece, and the end part of the rod sleeve is in threaded connection with the second threaded hole. The novel electric wrench has the advantages that the rod sleeve is detachably connected with the base, the external threads and the second threaded holes at the end part of the rod sleeve can be designed into uniform specifications, and the base and the clamping jaw of various specifications can be provided with the rod sleeve and the inner rod.

In some embodiments, the rod sleeve is sheathed with a rubber sleeve or a silicone sleeve. The medical rod sleeve has the beneficial effect that a doctor can conveniently hold the rod sleeve when rotating the inner rod.

Drawings

Fig. 1 is a block diagram of a novel multi-functional double-acting cup implanter according to an embodiment of the present disclosure.

Figure 2 is a cross-sectional view of a base and jaws assembled in accordance with one embodiment of the present disclosure.

Fig. 3 is a cross-sectional view of the base and the jaw assembly along a central axis of the second spacer pin according to an embodiment of the present disclosure.

Fig. 4 is an exploded view of a base according to an embodiment of the present disclosure.

Figure 5 is a cross-sectional view of a rod sleeve and inner rod assembly according to one embodiment of the present disclosure.

Fig. 6 is an enlarged view of the circled position in fig. 5.

FIG. 7 is a schematic view of a double action cup clamped according to an embodiment of the present disclosure.

Figure 8 illustrates the clamping principle of a prior art double-acting cup implanter.

Detailed Description

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

The present disclosure provides a novel multifunctional double-acting cup implanter, please refer to fig. 1, which comprises a base 100, a clamping jaw 200, a rod sleeve 300 and an inner rod 400. The clamping jaw 200 is installed on the base 100, the clamping jaw 200 is driven by the rod sleeve 300 and the inner rod 400 to firmly clamp the double-acting cup, a doctor can send the double-acting cup into a human body by holding the rod sleeve 300 with hands, and the rod sleeve 300 and the inner rod 400 can also transmit striking force, so that the double-acting cup can be fixed at an implantation part, namely the implanter has the functions of clamping and transmitting the striking force.

Figure 2 schematically illustrates an assembly half-sectional view of a base 100 and jaws 200 of an embodiment of the disclosure. Referring to fig. 2, the clamping jaw 200 is mounted on the base 100, the clamping jaw 200 includes a movable member 201 capable of moving, and at least two clamping arms 202 uniformly distributed around the movable member 201, and the movable member 201 is provided with a first threaded hole 206 extending along the moving direction. A fulcrum 203 is arranged between two ends of the clamping arm 202, one end of the clamping arm 202 extends towards the movable piece 201, the other end extends back to the movable piece 201, and the end is provided with a claw head 204. The clamping arms 202 are uniformly arranged around the moving part 201 in the circumferential direction, and there may be two clamping arms 202, for example, in the embodiment shown in fig. 2, there are two clamping arms 202 symmetrically arranged on both sides of the moving part 201. In some embodiments, the number of clamp arms 202 may also be three or four. The clamping arm 202 forms a lever structure, when the movable member 201 moves along the axial direction thereof, the movable member 201 can push the clamping arm 202 to rotate around the fulcrum 203, so that the claw head 204 clamps or releases the double-acting cup. Preferably, the fulcrum 203 is close to the claw head 204, so that the double-acting cup can be clamped more easily and the clamping force is larger. For example, a first groove 205 corresponding to the clamping arm 202 is disposed on a side surface of the movable member 201, one end of the clamping arm 202 extends into the first groove 205, and when the movable member 201 moves, an inner side wall of the first groove 205 pushes the clamping arm 202 to rotate. When the movable piece 201 moves towards the direction of the rod sleeve 300, the claw head 204 clamps the double-acting cup, and when the movable piece 201 moves away from the direction of the rod sleeve 300, the claw head 204 releases the double-acting cup.

With reference to fig. 2, the base 100 has an accommodating cavity 101 for accommodating the movable element 201, a second threaded hole 102 connected to the accommodating cavity 101 and formed along the moving direction of the movable element 201, and a channel 103 connected to the accommodating cavity 101 and extending laterally, and the clamping arm 202 is hinged in the channel 103 through a cylindrical pin, where the hinge point is a pivot 203. For example, the receiving cavity 101 extends from the inside of the base 100 to the bottom of the base 100, and an opening is formed on the bottom surface of the base 100, and the movable member 201 can be inserted into the opening. The movable member 201 is movable in the accommodating chamber 101 along the extending direction of the accommodating chamber 101. The second threaded hole 102 extends from the receiving cavity 101 to the upper end of the base 100. The channels 103 correspond to the clamping arms 202, each channel 103 extends from the receiving cavity 101 to the edge of the base 100 in a radial direction, and the cylindrical pins of the hinged clamping arms 202 are fixed on the side walls of the channel 103. In order to prevent the double-acting cup from being clamped excessively to deform the double-acting cup, the movable stroke of the fixed movable member 201 needs to be limited. Specifically, referring to fig. 3, a third groove 207 is disposed on a side surface of the movable member 201, a lateral first limit pin 112 is disposed on the base 100, and an end of the first limit pin 112 extends into the third groove 207. The third groove 207 has a certain length in the moving direction of the movable member 201, and the length is the moving stroke of the movable member 201.

Referring to fig. 4, the base 100 includes a first portion 105 and a second portion 106 adapted to the first portion 105, a first protrusion 107 is disposed at a bottom of the first portion 105, a second recess 108 adapted to the first protrusion 107 is disposed on a surface of the second portion 106, and the first protrusion 107 and the second recess 108 are in interference fit, so that the first portion 105 and the second portion 106 are fixedly connected. In some embodiments, the first portion 105 is made of metal, and the second portion 106 is made of plastic. In the embodiment shown in fig. 4, the first part 105 has a cross-shape, wherein two opposite arms of the cross-shape are provided for mounting the clamping arms 202, and the other two opposite arms are provided at their ends with positioning posts 109, which positioning posts 109 are provided for forming a positioning structure in cooperation with the shape of the mouth of the double-acting cup. In the embodiment shown in fig. 3, the bottom surface of the second portion 106 is provided with a second boss 110, and a force-bearing surface 111 is formed around the second boss 110, and when the double-acting cup is held, the second boss 110 extends into the rim of the double-acting cup, and the force-bearing surface 111 contacts with the edge of the double-acting cup. The force-bearing surface 111 receives the reaction force of the double-acting cup during impact. In some embodiments, the second portion 106 may be made of a plastic material, which may provide cushioning during impact.

Referring to fig. 5, the rod cover 300 is in the form of a sleeve, one end of which can be connected to the base 100. Preferably, the rod cover 300 is detachably coupled to the base 100. Specifically, an external thread is provided at one end of the rod cover 300, and the end is screwed into the second screw hole 102. Because there are many sizes of double-action cups, the base 100 and jaws 200 for gripping the double-action cups should also have many sizes. The external thread at the end of the rod sleeve 300 and the second threaded hole 102 can be designed into a uniform specification, and the base 100 and the clamping jaw 200 with various specifications can be provided with the same rod sleeve 300 and the same inner rod 400. In some embodiments, the sleeve 300 is covered with a rubber or silicone sleeve to facilitate the physician's grip on the sleeve 300 when rotating the inner rod 400.

Referring to fig. 5, the inner rod 400 is inserted into the lumen of the rod sleeve 300. One end of the inner rod 400 has an external thread and the other end has a handle 401, and both ends of the inner rod 400 respectively extend out of both ends of the rod cover 300. The inner rod 400 is configured to be immovable in the length direction, and the inner rod 400 is rotatable about its central axis. Specifically, referring to fig. 6, an annular groove 402 is formed on the outer periphery of the handle 401, a second stopper pin 301 extending laterally to the lumen of the rod sleeve 300 is disposed on the rod sleeve 300, the second stopper pin 301 extends into the annular groove 402, and the second stopper pin 301 restricts the movement of the inner rod 400 in the length direction, but does not affect the rotation of the inner rod 400. In some embodiments, the annular groove 402 may also be disposed at the outer periphery of the inner rod 400. In a state where the rod cover 300 is assembled with the base 100, the end of the inner rod 400 is threadedly coupled with the first threaded hole 206. Specifically, the end of the rod sleeve 300 is connected to the second threaded hole 102, and when the inner rod 400 is rotated, the movable member 201 moves on the external thread of the end of the inner rod 400 because the inner rod 400 cannot move in the length direction thereof and the movable member 201 is movable.

The principle of operation of an embodiment of the present disclosure is illustrated by the example of a double-acting cup shown in fig. 7. The outer rim of the double acting cup 500 has a notch 501 for clamping and positioning, for example, four notches 501 are uniformly distributed on the outer rim of the double acting cup 500 in fig. 7, and the notches 501 are semi-cylindrical. The positioning post 109 and the claw head 204 are preferably designed to fit into the recess 501, for example, they are each designed as a half cylinder. When the double-acting cup 500 is implanted, the positioning columns 109 are firstly placed in two opposite notches 501, and at the moment, two claw heads 204 just correspond to the other two notches 501, so that the implanter and the double-acting cup 500 are quickly and accurately positioned, and the double-acting cup is convenient to clamp subsequently. Then, the doctor grasps the rod sleeve 300 with one hand and rotates the inner rod 400 with the other hand, for example, the inner rod 400 can be rotated with less effort by the handle 401, so that the movable member 201 moves toward the handle 401, the movable member 201 pushes the clamping arms 202 to rotate, the two claw heads 204 are relatively closed, and the double-acting cup 500 is firmly clamped. The implanter of the present disclosure applies a clamping force to the double acting cup 500 from the outside thereof without making the inside of the cup rim of the double acting cup linear, thereby avoiding a large frictional wear between the double acting cup and the liner. In addition, the operation of clamping the double-acting cup is labor-saving and convenient. After the double action cup 500 is clamped, the surgeon holds the rod sleeve 300 to send the double action cup 500 to the implantation site, and then strikes the handle 401 end of the inner rod 400, and the striking force is transmitted through the rod sleeve 300 and the inner rod 400, so that the double action cup 500 is embedded into the implantation site. The implanter disclosed by the invention is firm in clamping and can prevent the double-acting cup from being separated from the clamping jaw due to vibration in the striking process. When the implantation is completed, the physician holds the rod sleeve 300 with one hand and rotates the inner rod 400 in the opposite direction with the other hand, moving the moveable member 201 away from the end of the handle 401, and gradually releasing the dual action cup from the jaw head 204. Since the stem sleeve 300 is stationary, the double action cup is not subjected to torque during the process of releasing the double action cup. After the claw head 204 has fully released the double action cup, the implanter is removed as a whole.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.