阅读说明：本技术 卡合机构及具有其的导引器 (Clamping mechanism and guide with same ) 是由 李文钊 董骧 于 2019-10-30 设计创作，主要内容包括：本公开涉及医疗器械技术领域,提出了一种卡合机构及具有其的导引器,卡合机构包括第一卡合件和第二卡合件,第一卡合件上设置有第一连接部,第一连接部为至少两个；第二卡合件上设置有第二连接部,第二连接部为至少两个,第二连接部用于与第一连接部卡合连接；其中,相邻两个第一连接部之间的距离与其相对应连接的相邻两个第二连接部之间的距离不相等,第一卡合件和第二卡合件中的至少之一可变形地设置,以使相邻两个第一连接部之间的距离,和/或相邻两个第二连接部之间的距离可调节地设置。相邻两个第一连接部和相邻两个第二连接部通过弹性变形实现连接,两个第一连接部和两个第二连接部依靠弹性力实现第一卡合件和第二卡合件的稳定连接。(The invention relates to the technical field of medical instruments and provides a clamping mechanism and a guide with the same, wherein the clamping mechanism comprises a first clamping piece and a second clamping piece, the first clamping piece is provided with at least two first connecting parts; the second clamping piece is provided with at least two second connecting parts which are used for clamping and connecting with the first connecting part; the distance between two adjacent first connecting parts is not equal to the distance between two adjacent second connecting parts correspondingly connected with the first connecting parts, and at least one of the first clamping piece and the second clamping piece can be arranged in a deformable mode, so that the distance between two adjacent first connecting parts and/or the distance between two adjacent second connecting parts can be arranged in an adjustable mode. Two adjacent first connecting portions and two adjacent second connecting portions realize connecting through elastic deformation, and two first connecting portions and two second connecting portions rely on elastic force to realize the stable connection of first fastener and second fastener.)

1. A snap-fit mechanism, comprising:

the clamping device comprises a first clamping piece (10), wherein a first connecting part (11) is arranged on the first clamping piece (10), and the number of the first connecting parts (11) is at least two;

the second clamping piece (20) is provided with at least two second connecting parts (21), and the second connecting parts (21) are used for being clamped and connected with the first connecting part (11);

the distance between two adjacent first connecting parts (11) is not equal to the distance between two adjacent second connecting parts (21) correspondingly connected with the first connecting parts, and at least one of the first clamping piece (10) and the second clamping piece (20) is arranged in a deformable manner, so that the distance between two adjacent first connecting parts (11) and/or the distance between two adjacent second connecting parts (21) can be adjustably arranged.

2. The engaging mechanism according to claim 1, wherein the first engaging member (10) is provided with a first cut-out hole (12) to form a first deforming body (13) on the first engaging member (10) and to allow the first deforming body (13) to be swingably provided, and the first connecting portion (11) is located on the first deforming body (13); and/or the presence of a gas in the gas,

the second clamping piece (20) is provided with a second cutting hole, so that a second deformation body is formed on the second clamping piece (20), the second deformation body is arranged in a swinging mode, and the second connecting portion (21) is located on the second deformation body.

3. The snapping mechanism according to claim 2, wherein said first cut-out holes (12) are at least two, so as to form at least two first variants (13) on said first snapping piece (10), said first connecting portions (11) being provided on each of said at least two first variants (13); and/or the presence of a gas in the gas,

the number of the second cutting holes is at least two, so that at least two second deformation bodies are formed on the second clamping piece (20), and the second connecting parts (21) are arranged on the at least two second deformation bodies.

4. The engaging mechanism according to claim 2, wherein the first cut-out hole (12) is located in the middle of the first engaging member (10), the first cut-out hole (12) extends along a first predetermined track, the first predetermined track is a curve, and two ends of the first cut-out hole (12) have a first predetermined distance therebetween; and/or the presence of a gas in the gas,

the second cutting hole is located in the middle of the second clamping piece (20), the second cutting hole extends along a second preset track, the second preset track is a curve, and a second preset distance is formed between two end portions of the second cutting hole.

5. The engaging mechanism according to claim 4, wherein the first cut-out hole (12) comprises a first hole section (121) and two second hole sections (122) at two ends of the first hole section (121), the hole wall of the second hole section (122) is an arc-shaped surface, and part of the second hole section (122) is expanded inwards from the opening of the second hole section (122); and/or the presence of a gas in the gas,

the second resection hole includes the third hole section and is located two fourth hole sections at third hole section both ends, the pore wall of fourth hole section is the arcwall face, the part of fourth hole section by the opening of fourth hole section is inside to be expanded.

6. The snapping mechanism according to any one of claims 1 to 5, wherein the first connecting portion (11) is a protrusion, the second connecting portion (21) is a recess, and the first connecting portion (11) is inserted into the second connecting portion (21); or the like, or, alternatively,

the first connecting portion (11) is a groove, the second connecting portion (21) is a protrusion, and the second connecting portion (21) is inserted into the first connecting portion (11).

7. The engagement mechanism according to claim 6, wherein the protrusion is a pin and the recess is a circular hole;

wherein the pin and/or the end of the round hole are/is provided with a chamfer.

8. The engagement mechanism according to claim 6, wherein the protrusion is a pin and the recess is a circular hole;

the difference between the distance between the center lines of two adjacent pins and the distance between the center lines of two adjacent round holes ranges from 0 to half of the diameter of the pins.

9. The engagement mechanism according to any one of claims 1 to 5, wherein there are three first connection portions (11) and three second connection portions (21), and the three first connection portions (11) and the three second connection portions (21) are provided in one-to-one correspondence.

10. The engaging mechanism according to claim 9, characterized in that the distances between two adjacent first connecting portions (11) are equal; and/or the distances between two adjacent second connecting parts (21) are equal.

11. An introducer comprising a snap-fit mechanism as claimed in any one of claims 1 to 10.

Technical Field

The disclosure relates to the technical field of medical instruments, in particular to a clamping mechanism and a guide with the same.

Background

In orthopedic surgery, a surgeon implants a prosthesis into a patient using a variety of surgical tools, most of which are mounted from a plurality of instruments. At present, most of the connection between the instruments is realized by using screws or pressing steel balls. However, the assembly method using the screw connection is inefficient, and the screw itself is inconvenient to clean and sterilize; and the assembly mode of using steel ball to compress tightly is easy to loosen in the knocking process. Such as the more commonly used outer cup introducer.

Disclosure of Invention

It is a primary object of the present disclosure to overcome at least one of the above-mentioned disadvantages of the prior art and to provide a snap-fit mechanism and an introducer having the same.

According to a first aspect of the present invention, there is provided a click mechanism comprising:

the first clamping piece is provided with at least two first connecting parts;

the second clamping piece is provided with at least two second connecting parts, and the second connecting parts are used for being clamped and connected with the first connecting parts;

the distance between two adjacent first connecting parts is not equal to the distance between two adjacent second connecting parts correspondingly connected with the first connecting parts, and at least one of the first clamping piece and the second clamping piece can be arranged in a deformable mode, so that the distance between two adjacent first connecting parts and/or the distance between two adjacent second connecting parts can be arranged in an adjustable mode.

In one embodiment of the present invention, the first engaging member is provided with a first cut-out hole to form a first deformable body on the first engaging member and to allow the first deformable body to be swingably disposed, and the first connecting portion is located on the first deformable body; and/or the presence of a gas in the gas,

the second clamping piece is provided with a second cutting hole so as to form a second deformation body on the second clamping piece, the second deformation body can be arranged in a swinging mode, and the second connecting portion is located on the second deformation body.

In one embodiment of the invention, the number of the first cutting holes is at least two, so as to form at least two first deformation bodies on the first clamping piece, and the first connecting parts are arranged on the at least two first deformation bodies; and/or the presence of a gas in the gas,

the second excision hole is at least two to form two at least second deformations on the second fastener, all be provided with the second connecting portion on two at least second deformations.

In one embodiment of the invention, the first cutting hole is located in the middle of the first clamping member, the first cutting hole extends along a first preset track, the first preset track is a curve, and a first preset distance is formed between two end parts of the first cutting hole; and/or the presence of a gas in the gas,

the second excision hole is located the middle part of second fastener, and the second excision hole extends along the second preset orbit, and the second preset orbit is the curve, has the second preset interval between two tip in the second excision hole.

In one embodiment of the invention, the first cutting hole comprises a first hole section and two second hole sections positioned at two ends of the first hole section, the hole walls of the second hole sections are arc-shaped surfaces, and parts of the second hole sections are expanded inwards from the openings of the second hole sections; and/or the presence of a gas in the gas,

the second resection hole includes the third hole section and is located two fourth hole sections at third hole section both ends, and the pore wall of fourth hole section is the arcwall face, and the part of fourth hole section is inwards expanded by the opening of fourth hole section.

In one embodiment of the present invention, the first connecting portion is a protrusion, the second connecting portion is a groove, and the first connecting portion is inserted into the second connecting portion; or the like, or, alternatively,

the first connecting portion is a groove, the second connecting portion is a protrusion, and the second connecting portion is inserted into the first connecting portion.

In one embodiment of the invention, the protrusion is a pin, and the groove is a round hole;

wherein, the pin, and/or the tip of round hole are provided with the chamfer.

In one embodiment of the invention, the protrusion is a pin, and the groove is a round hole;

and the difference between the distance between the center lines of two adjacent pins and the distance between the center lines of two adjacent round holes ranges from 0 to half of the diameter of the pin.

In one embodiment of the present invention, the number of the first connection portions is three, the number of the second connection portions is three, and the three first connection portions and the three second connection portions are arranged in a one-to-one correspondence.

In one embodiment of the present invention, the distances between two adjacent first connection portions are equal; and/or the distances between two adjacent second connecting parts are equal.

According to a second aspect of the present invention there is provided an introducer comprising the above-described snap-fit mechanism.

According to the clamping mechanism, after the first clamping piece and the second clamping piece are matched, the two adjacent first connecting parts and the two adjacent second connecting parts are clamped and connected through elastic deformation, namely, the connecting force between the two first connecting parts and the two second connecting parts is derived from the deformation force between the first clamping piece or the second clamping piece, so that the two adjacent first connecting parts and the two adjacent second connecting parts realize stable connection of the first clamping piece and the second clamping piece through the elastic force.

Drawings

Various objects, features and advantages of the present disclosure will become more apparent from the following detailed description of preferred embodiments thereof, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary illustrations of the disclosure and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:

FIG. 1 is an exploded schematic view of a snapping mechanism, according to an exemplary embodiment;

FIG. 2 is a schematic structural view of a first perspective of a first engagement member of an engagement mechanism according to one exemplary embodiment;

FIG. 3 is a schematic structural view of a first engagement member of an engagement mechanism shown from a second perspective in accordance with an exemplary embodiment;

FIG. 4 is a schematic structural view of a second engagement member of an engagement mechanism according to one exemplary embodiment;

fig. 5 is a schematic diagram illustrating the construction of an introducer, according to an exemplary embodiment.

The reference numerals are explained below:

10. a first engaging member; 11. a first connection portion; 12. a first cut-out hole; 121. a first bore section; 122. a second bore section; 13. a first deformable body; 20. a second engaging member; 21. a second connecting portion; 30. a body portion; 31. a rod body; 32. a handle body; 40. a guide arm.

Detailed Description

Exemplary embodiments that embody features and advantages of the present disclosure are described in detail below in the specification. It is to be understood that the disclosure is capable of various modifications in various embodiments without departing from the scope of the disclosure, and that the description and drawings are to be regarded as illustrative in nature, and not as restrictive.

In the following description of various exemplary embodiments of the disclosure, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the disclosure may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present disclosure. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the disclosure, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of this disclosure.

Referring to fig. 1 to 4, an embodiment of the present invention provides an engaging mechanism, including: the first clamping piece 10 is provided with at least two first connecting parts 11, and the first connecting parts 11 are arranged on the first clamping piece 10; the second engaging member 20, the second engaging member 20 is provided with at least two second connecting portions 21, and the second connecting portions 21 are used for engaging with the first connecting portion 11; wherein, the distance between two adjacent first connecting portions 11 is not equal to the distance between two adjacent second connecting portions 21 correspondingly connected to the first connecting portions, and at least one of the first engaging member 10 and the second engaging member 20 is flexibly arranged, so that the distance between two adjacent first connecting portions 11 and/or the distance between two adjacent second connecting portions 21 is adjustably arranged.

In the engaging mechanism according to an embodiment of the present invention, the two adjacent first connecting portions 11 and the two adjacent second connecting portions 21 are engaged with each other by elastic deformation, that is, a connecting force between the two first connecting portions 11 and the two second connecting portions 21 is derived from a deformation force between the first engaging member 10 and/or the second engaging member 20, so that the two adjacent first connecting portions 11 and the two adjacent second connecting portions 21 are stably connected with each other. When the connection is specifically performed, only the first connecting portion 11 and the second connecting portion 21 need to be connected, and the deformation force between the first engaging member 10 and/or the second engaging member 20 can ensure that the two are stably connected, so that the problem of low screw connection efficiency or poor steel ball compression stability in the prior art is solved. The clamping mechanism of the embodiment of the invention has simple structure, can more conveniently and fully sterilize and avoids infection.

In one embodiment, before the first engaging member 10 and the second engaging member 20 are not deformed, the distance between two adjacent first connecting portions 11 is not equal to the distance between two adjacent second connecting portions 21 connected to the first connecting portions, that is, when the first engaging member 10 or the second engaging member 20 is specifically installed, so that the distance between two adjacent first connecting portions 11 is equal to the distance between two adjacent second connecting portions 21 connected to the second connecting portions, thereby realizing the connection.

In one embodiment, when the number of the first connection portions 11 and the second connection portions 21 is 3 or more than 3, at least the distance between two adjacent first connection portions 11 and the distance between two adjacent second connection portions 21 corresponding to the two adjacent first connection portions are not equal to each other.

In one embodiment, at least a part of the first engaging member 10 is arranged to be deformable, that is, only the distance between two adjacent first connecting portions 11 needs to be ensured to be adjustably arranged; and/or at least part of the second engaging member 20 is arranged in a deformable manner, so that it is only necessary to ensure that the distance between two adjacent second connecting portions 21 is arranged adjustably. The first engaging piece 10 and the second engaging piece 20 are deformed to provide engaging force for the connection of the two first connecting portions 11 and the two second connecting portions 21, only for the connection of the two adjacent first connecting portions 11 and the two adjacent second connecting portions 21.

In one embodiment, the deformation of the first engaging member 10 or the second engaging member 20 is elastic deformation, so that the elastic restoring force can be generated after the deformation, thereby providing the connection tension.

In one embodiment, the number of the first connecting portions 11 and the number of the second connecting portions 21 may be equal to or different from each other, and it is only necessary to ensure that the first engaging piece 10 and the second engaging piece 20 can be stably connected to each other.

In one embodiment, the first connection portion 11 and the second connection portion 21 are detachably connected.

As shown in fig. 2, a first cut-out hole 12 is formed in the first engaging member 10 to form a first deformable body 13 on the first engaging member 10, and a first connecting portion 11 is formed on the first deformable body 13, wherein the first deformable body 13 is swingably disposed; and/or a second cutout hole is provided in the second engaging member 20 to form a second deformable body on the second engaging member 20, the second deformable body being provided with a second connecting portion 21, wherein the second deformable body is swingably provided.

In one embodiment, the first cut-out hole 12 of the first engaging member 10 is a through hole, and the first deformed body 13 can be formed on the first engaging member 10 by providing the first cut-out hole 12 on the first engaging member 10. A gap is formed between the outer edge of the first deforming body 13 and the adjacent part, and the gap is the first cutting hole 12, so that the first deforming body 13 deforms in the first cutting hole 12, and the first connecting portion 11 on the first deforming body 13 is driven to move, and the distance between two adjacent first connecting portions 11 is adjusted.

In one embodiment, the first deformation body 13 may be located at the middle of the first engaging member 10, that is, the first cut-out hole 12 is located at the middle of the first engaging member 10, wherein the middle is other than the circumferential outer edge, and the first cut-out hole 12 does not intersect with the circumferential outer edge of the first engaging member 10. The first deformable body 13 may also include a partial body of the outer edge of the first engaging member 10, that is, the first cut-out hole 12 communicates with the circumferential outer edge of the first engaging member 10.

In an embodiment, the second cutting hole on the second engaging member 20 is a through hole, and the second cutting hole is disposed on the second engaging member 20, so that a second deformable body can be formed on the second engaging member 20, a gap will appear between the outer edge of the second deformable body and the adjacent component, and the gap is the second cutting hole, so that the second deformable body deforms in the second cutting hole, and the second connecting portion 21 on the second deformable body is driven to move, thereby adjusting the distance between the two adjacent second connecting portions 21.

In one embodiment, the second deformation body may be located at the middle of the second engaging member 20, that is, the second cut-out hole is located at the middle of the second engaging member 20, wherein the middle is a portion other than the circumferential outer edge, and the second cut-out hole does not intersect with the circumferential outer edge of the second engaging member 20. The second variant may also comprise a partial section of the outer edge of the second detent element 20, i.e. the second cut-out opening communicates with the circumferential outer edge of the second detent element 20.

In one embodiment, there are at least two first cut-out holes 12 to form at least two first deformation bodies 13 on the first engaging member 10, and each of the at least two first deformation bodies 13 is provided with a first connecting portion 11; and/or the number of the second cutting holes is at least two, so as to form at least two second deformation bodies on the second clamping piece 20, and the at least two second deformation bodies are provided with second connecting parts 21.

In one embodiment, the number of the first cutting holes 12 may be one or more, and the adjustment of the distance between two adjacent first connecting portions 11 may be achieved when only one first transformation body 13 is provided. Accordingly, the second cutting hole may be one or more.

In one embodiment, the first variant 13 and the second variant may occur simultaneously, or alternatively.

In one embodiment, the first cut-off hole 12 is located in the middle of the first engaging member 10, the first cut-off hole 12 extends along a first predetermined track, the first predetermined track is a curve, and a first predetermined distance W is formed between two end portions of the first cut-off hole 12; and/or the second cutting hole is located in the middle of the second clamping piece 20, the second cutting hole extends along a second preset track, the second preset track is a curve, and a second preset distance is formed between two end parts of the second cutting hole. Specifically, the first preset track may be an irregular U-shape, and similarly, the second preset track may also be an irregular U-shape. The opening width of the U-shaped opening end can be a first preset interval W or a second preset interval. The middle part is the other part except the circumferential outer edge, the first cut-out hole 12 does not intersect with the circumferential outer edge of the first engaging member 10, and the second cut-out hole does not intersect with the circumferential outer edge of the second engaging member 20.

In one embodiment, as shown in fig. 1, the first cut-out hole 12 includes a first hole segment 121 and two second hole segments 122 located at both ends of the first hole segment 121, and the hole walls of the second hole segments 122 are arc-shaped surfaces. Optionally, a portion of the second bore section 122 is expanded inward from the opening of the second bore section 122, that is, the opening of the second bore section 122 has a smaller space and a larger side opposite to the opening. Minimum distance between the opening of two second hole sections 122 is greater than the minimum distance between the inside of two second hole sections 122, can make the swing of first variant 13 warp more easily, simultaneously in addition the pore wall of second hole section 122 is the arcwall face setting, the transition is natural between each linkage segment, can effectually avoid appearing the root in first variant 13 swing in-process and tear, and because tear the fracture problem that the problem seriously caused etc., thereby can reduce the loss of equipment, increase the life of whole device, save the cost, simultaneously can also reduce the risk that causes the operation delay or even failure because of appearing the instrument damage in the operation process. And/or the presence of a gas in the gas,

the second resection hole includes the third hole section and is located two fourth hole sections at third hole section both ends, and the pore wall of fourth hole section is the arcwall face. Optionally, a portion of the fourth pore section is expanded inward from the opening of the fourth pore section, that is, the opening of the fourth pore section has a smaller space and a larger side opposite to the opening. The fourth hole section also has the functions of the second hole section and has the same beneficial effects.

In one embodiment, the first cut-out hole 12 is to cut out a deformable first deformable body 13 on the first engaging member 10, that is, on the premise of ensuring that the first deformable body 13 is not broken, it is necessary to ensure that the first deformable body 13 is easily deformed. The root of the first deformation body 13, i.e. the swing support portion, is located between the two ends of the first cut-out hole 12, and the free portion of the first deformation body 13 is used for arranging the first connection portion 11. The root of the first deforming body 13 may be smaller than the free portion of the first deforming body 13 at the time of specific design.

In one embodiment, the second cut-out hole is to cut out a deformable second deformable body on the second engaging member 20, that is, on the premise that the second deformable body is not broken, it is required to ensure that the second deformable body is easily deformed. The root of the second deformation body, i.e. the swing support portion, is located between the two ends of the second cut-out hole, and the free end of the second deformation body is used for arranging the second connection portion 21. The root portion of the second deforming body may be smaller than the free portion of the second deforming body at the time of specific design.

In one embodiment, both ends of the first cut-off hole 12 are arc-shaped surfaces, that is, both ends of the first cut-off hole 12 are arc-shaped holes, and the arc-shaped holes may be circular holes or irregular arc-shaped holes. Correspondingly, both ends of the second cutting hole are arc-shaped surfaces, namely, both ends of the second cutting hole are arc-shaped holes, and the arc-shaped holes can be round holes or irregular arc-shaped holes.

In one embodiment, the first connecting portion 11 and the second connecting portion 21 are snapped, i.e. engaged. In the specific installation process, the first clamping member 10 and the second clamping member 20 are connected through deformation, and the two clamping members can be stably connected only through clamping under the action of deformation restoring force.

In one embodiment, snapping represents not only a connection between snaps, but also an interposed connection. The first connecting portion 11 and the second connecting portion 21 may be a connection between a buckle and a bayonet, or a connection between only one protrusion and one groove.

In one embodiment, the first connecting portion 11 is a protrusion, the second connecting portion 21 is a groove, and the first connecting portion 11 is inserted into the second connecting portion 21; or, the first connecting portion 11 is a groove, the second connecting portion 21 is a protrusion, and the second connecting portion 21 is inserted into the first connecting portion 11. The arrangement of the first connecting part 11 and the second connecting part 21 not only facilitates the connection, but also facilitates the cleaning and sterilization thereof.

In one embodiment, the protrusion is a pin and the recess is a circular hole; wherein, the pin, and/or the tip of round hole are provided with the chamfer. The chamfer is arranged to facilitate the insertion of the pin into the circular hole.

In one embodiment, the protrusion is a pin and the recess is a circular hole; and the difference between the distance between the center lines of two adjacent pins and the distance between the center lines of two adjacent round holes ranges from 0 to half of the diameter of the pin. If the distance between the central lines of two adjacent pins is A, the distance between the central lines of two adjacent round holes is a, and the diameter of the pin is D, the A-a is more than 0 and less than D/2.

In one embodiment, as shown in fig. 2 and 4, the number of the first connection portions 11 is three, the number of the second connection portions 21 is three, and the three first connection portions 11 and the three second connection portions 21 are arranged in a one-to-one correspondence.

In one embodiment, the distances between two adjacent first connection portions 11 are all equal. And/or the distances between two adjacent second connecting parts 21 are equal. Of course, the distances between two adjacent first connection portions 11 or two adjacent second connection portions 21 may not be completely equal. The distance between two adjacent first connecting portions 11 and the distance between two adjacent second connecting portions 21 both indicate that the first engaging member 10 and/or the second engaging member 20 are not deformed.

In one embodiment, a connecting line between the center lines of the first connecting portions 11 is designed to be an equilateral triangle, wherein before the first engaging member 10 is not deformed, a distance between the center lines of two adjacent first connecting portions 11 is a, a distance between the center lines of two adjacent second connecting portions 21 is a, and a-a is β, and the degree of tightness of the engaging can be adjusted by adjusting the value of β and the value of W, so that the force required by the two engaging members for stably engaging can be satisfied, and the two engaging members can be easily detached after being used, so as to be sterilized and stored. When the 3 first connecting portions 11 of the first engaging member 10 are inserted into the three second connecting portions 21 of the second engaging member 20, the elastic portion tends to maintain the original distance a, thereby generating an elastic force.

An embodiment of the present invention also provides an introducer, as shown in fig. 5, including the above-described snap-fit mechanism. The introducer is an auxiliary tool for implanting the prosthesis into the human body.

In one embodiment, it is considered that the second engaging member 20 is suitable for connecting other parts of the instrument, that is, the part of the instrument where the second connecting portion 21 is arranged is relatively thick, and the first engaging member 10 where the first connecting portion 11 is arranged is relatively thin and is easily deformed, so that at least part of the first engaging member 10 is optionally a deformed body. By arranging at least part of the first engaging piece 10 to be deformable, an original distance and an assembling distance are formed between the center lines of two adjacent first connecting parts 11, and the original distance is larger than the assembling distance; wherein the fitting distance is equal to the distance between the center lines of two adjacent second connecting portions 21.

In one embodiment, the guide is an acetabular cup guide that may be used to implant an acetabular cup into a human body, the acetabular cup guide including a body portion 30, a guide arm 40, a first engagement member 10, and a second engagement member 20, the body portion 30 connected to the second engagement member 20, the guide arm 40 connected to the first engagement member 10, the body portion 30 and the guide arm 40 connected to the first engagement member 10 via the second engagement member 20. The guide arms 40 may be used to indicate the left and right prosthetic rake angles. The main body 30 includes a rod 31 and a handle 32, the handle 32 is connected to one end of the rod 31, the other end of the rod 31 is used for connecting an acetabular cup, and the second engaging member 20 can be connected to the rod 31.

In one embodiment, the rod 31 and the second engaging member 20 are integrally formed, and the guiding arm 40 and the first engaging member 10 are integrally formed.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and exemplary embodiments be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.