Distraction device

Abstract

According to the distraction device provided by the utility model, the long-acting distraction device is additionally arranged at the joint of a medical instrument, and the angle adjusting piece is connected with each distraction arm, so that the distraction caliber of the distraction device can be freely adjusted, and the occlusal surface of the joint can be thoroughly cleaned after the joint part of the medical instrument is distraction; and the situation that the joint component is closed again in the instrument cleaning process is effectively avoided. The use reliability of the medical instrument with the joints is guaranteed, and the service life of the medical instrument with the joints is prolonged.

Description

Technical Field

[0001] The utility model relates to a spreader. Background Art

[0002] It is difficult to clean the dead corners of the occlusal surfaces of medical devices with joints. Dirt that is not fully cleaned will remain in the dead corners of the occlusal surfaces, causing organic matter to solidify and dry, and even form a biofilm, which will affect the cleaning pass rate of surgical instruments. Utility Model Content

[0003] The purpose of the utility model is to provide a spreader.

[0004] In order to solve the above problems, the utility model provides a spreader, comprising:

[0005] Two spreading arms, one end of the two spreading arms are connected by a hinge;

[0006] A spreading piece, wherein the other end of each spreading arm is connected to a corresponding spreading piece, and the spreading piece is supported at the joint of the medical device to expose the occlusal surface of the joint;

[0007] An angle adjusting member, two ends of which are respectively connected to the two spreading arms to adjust the spreading angles of the spreading arms.

[0008] Further, in the above-mentioned spreader, a first through hole is provided on the left spreader arm, an inner inverted nut is provided in the first through hole, and a first internal thread is provided in the inner inverted nut of the first through hole; a second through hole is provided on the right spreader arm, an inner inverted nut is provided in the second through hole, and a second internal thread is provided in the inner inverted nut of the second through hole; the first through hole and the second through hole are elliptical through holes;

[0009] The angle adjustment member is a screw rod, and the left and right sections of the screw rod are respectively provided with a first external thread and a second external thread; wherein, the left section of the screw rod passes through the corresponding first through hole, and the first internal thread in the internal forward nut of the first through hole cooperates with the first external thread at different positions of the left section of the screw rod; the right section of the screw rod passes through the corresponding second through hole, and the second internal thread in the internal forward nut of the second through hole cooperates with the second external thread at different positions of the right section of the screw rod; the directions of the first external thread and the second external thread are opposite; the adjustment of the expansion angle of the expansion arm is achieved by the first internal thread cooperating with the first external thread at different positions of the left section of the screw rod, and by the second internal thread cooperating with the second external thread at different positions of the right section of the screw rod.

[0010] Furthermore, in the above-mentioned spreader, the first external thread is a left-handed external thread, and the first internal thread in the first through hole is a left-handed internal thread.

[0011] Furthermore, in the above-mentioned spreader, the second external thread is a right-handed external thread, and the second internal thread in the second through hole is a right-handed internal thread.

[0012] Furthermore, in the above-mentioned spreader, an adjustment knob is also provided at the middle connecting position of the left and right sections of the screw. By turning the adjustment knob, the first internal thread in the first through hole is driven to cooperate with the first external thread at different positions of the left section of the screw, and the second internal thread in the second through hole is driven to cooperate with the second external thread at different positions of the right section of the screw.

[0013] Furthermore, in the above-mentioned spreader, the spreader member is an elastic member.

[0014] Furthermore, in the above-mentioned spreader, the elastic component is also coated with plastic.

[0015] Furthermore, in the above-mentioned spreader, the spreader is made of memory stainless steel wire.

[0016] Furthermore, in the above-mentioned spreader, the spreader arm and the angle adjustment member are made of stainless steel.

[0017] Furthermore, in the above-mentioned spreader, a third screw hole is provided at the other end of each spreader arm, and a third external thread matching with the third screw hole is provided at the top of each spreader member. A spreader arm is connected to a corresponding spreader member through the matching of the third screw hole and the third external thread.

[0018] Compared with the prior art, the present invention can realize the free adjustment of the opening diameter of the expander by installing a long-acting expander at the joint of the medical device and connecting the angle adjustment member with each expander arm, so that the occlusal surface of the joint can be thoroughly cleaned after the joint parts of the medical device are expanded, and the joint parts can be effectively prevented from closing again during the cleaning process of the device, thereby ensuring the reliability of the medical device with joints and extending the service life of the medical device with joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of a spreader according to an embodiment of the present utility model;

[0020] Figure 2 It is a side view of a spreader according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] like Figure 1 and 2 As shown, the utility model provides a spreader, comprising:

[0023] Two spreading arms 1, one end of each spreading arm 1 is connected by a hinge 2;

[0024] A spreading piece 3, the other end of each spreading arm 1 is connected to a corresponding spreading piece 3, and the spreading piece 3 is supported at the joint of the medical device to expose the occlusal surface of the joint;

[0025] An angle adjusting member 4, two ends of which are respectively connected to the two spreading arms to adjust the spreading angles of the spreading arms.

[0026] In the actual cleaning operation of medical devices with joints, there is no effective long-term expansion structure in the cleaning basket due to the weight of the device itself and the tightness of the joints. In actual cleaning operations, due to various factors, even if the device is expanded and placed before cleaning, the joints of the device will close automatically after cleaning. Changes in water pressure and temperature in the cleaning machine can cause the joints of the device to close again.

[0027] The utility model can realize the free adjustment of the opening diameter of the opening member by adding a long-acting opening member to the joint of the medical device and connecting the angle adjustment member to each opening arm, so that the occlusal surface of the joint can be thoroughly cleaned after the joint parts of the medical device are opened, and the joint parts can be effectively prevented from closing again during the cleaning process of the device, thereby ensuring the reliability of the medical device with joints and extending the service life of the medical device with joints.

[0028] like Figure 1 As shown, the number of the spreading arms is at least two, and the number of the spreading arms can be set accordingly according to the number and positions of the joints of the medical device.

[0029] The number of the expansion members is consistent with the number of the expansion arms, so that each expansion arm drives the expansion members to expand to a required angle, and the expansion members expand the joints of the medical device to expose the occlusal surfaces of the joints.

[0030] In one embodiment of the spreader of the utility model, a first through hole is provided on a left spreader arm, an inner inverted nut is provided in the first through hole, and a first internal thread is provided in the inner inverted nut of the first through hole; a second through hole is provided on the other right spreader arm, an inner inverted nut is provided in the second through hole, and a second internal thread is provided in the inner inverted nut of the second through hole;

[0031] The angle adjustment member is a screw rod, and the left and right sections of the screw rod are respectively provided with a first external thread and a second external thread; wherein, the left section of the screw rod passes through the corresponding first through hole, and the first internal thread in the internal forward nut of the first through hole cooperates with the first external thread at different positions of the left section of the screw rod; the right section of the screw rod passes through the corresponding second through hole, and the second internal thread in the internal forward nut of the second through hole cooperates with the second external thread at different positions of the right section of the screw rod; the directions of the first external thread and the second external thread are opposite; the adjustment of the expansion angle of the expansion arm is achieved by the cooperation of the first internal thread with the first external thread at different positions of the left section of the screw rod, and the cooperation of the second internal thread with the second external thread at different positions of the right section of the screw rod.

[0032] Specifically, the structure of this embodiment can refer to the structure of an existing compass for fixing the expansion angle. The screw can be a forward-backward screw, which crosses the left expansion arm and the right expansion arm. The adjustment knob 5 is arranged in the middle of the forward-backward screw, and an inner forward-backward nut is arranged on the outer end surface of each expansion arm corresponding to the forward-backward screw, and the outer periphery of the inner forward-backward nut is a chamfered structure.

[0033] In an embodiment of the spreader of the present invention, the first external thread is a left-handed external thread, and the first internal thread in the first through hole is a left-handed internal thread.

[0034] In an embodiment of the spreader of the present invention, the second external thread is a right-handed external thread, and the second internal thread in the second through hole is a right-handed internal thread.

[0035] like Figure 1 and 2 As shown, in one embodiment of the spreader of the utility model, an adjusting knob 5 is further provided at the middle connecting position of the left and right sections of the screw rod. By rotating the adjusting knob 5, the first internal thread in the first through hole is driven to cooperate with the first external thread at different positions of the left section of the screw rod, and the second internal thread in the second through hole is driven to cooperate with the second external thread at different positions of the right section of the screw rod, thereby realizing convenient adjustment of the spreading angle of the spreading arm.

[0036] In an embodiment of the spreader of the present invention, the spreader is an elastic component.

[0037] In an embodiment of the spreader of the present invention, the elastic component is further coated with plastic to increase the friction between the contact surface of the elastic component and the joint of the medical device.

[0038] In an embodiment of the spreader of the present invention, the spreader is made of memory stainless steel wire.

[0039] In an embodiment of the spreader of the present invention, the spreader arm and the angle adjustment member are made of stainless steel.

[0040] In one embodiment of the spreader of the utility model, a third screw hole is provided at the other end of each spread arm, and a third external thread matching with the third screw hole is provided at the top of each spread member. A spread arm is connected to a corresponding spread member through the cooperation of the third screw hole and the third external thread, thereby realizing convenient installation and replacement of the spread member.

[0041] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0042] Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. A spreader, characterized in that: include: two spreading arms, one end of each spreading arm being connected by a hinge; A spreading piece, wherein the other end of each spreading arm is connected to a corresponding spreading piece, and the spreading piece is supported at the joint of the medical device to expose the occlusal surface of the joint; An angle adjusting member, two ends of which are respectively connected to the two spreading arms to adjust the spreading angles of the spreading arms.

2. The spreader according to claim 1, characterized in that: A first through hole is provided on the left opening arm, an inner inverted nut is provided in the first through hole, and a first internal thread is provided in the inner inverted nut of the first through hole; a second through hole is provided on the right opening arm, an inner inverted nut is provided in the second through hole, and a second internal thread is provided in the inner inverted nut of the second through hole; the first through hole and the second through hole are elliptical through holes; The angle adjustment member is a screw rod, and the left and right sections of the screw rod are respectively provided with a first external thread and a second external thread; wherein, the left section of the screw rod passes through the corresponding first through hole, and the first internal thread in the internal forward nut of the first through hole cooperates with the first external thread at different positions of the left section of the screw rod; the right section of the screw rod passes through the corresponding second through hole, and the second internal thread in the internal forward nut of the second through hole cooperates with the second external thread at different positions of the right section of the screw rod; the directions of the first external thread and the second external thread are opposite; the adjustment of the expansion angle of the expansion arm is achieved by the cooperation of the first internal thread with the first external thread at different positions of the left section of the screw rod, and the cooperation of the second internal thread with the second external thread at different positions of the right section of the screw rod.

3. The spreader according to claim 2, characterized in that: The first external thread is a left-handed external thread, and the first internal thread in the first through hole is a left-handed internal thread.

4. The spreader according to claim 2, characterized in that: The second external thread is a right-handed external thread, and the second internal thread in the second through hole is a right-handed internal thread.

5. The spreader according to claim 2, characterized in that: An adjusting knob is also provided at the middle connecting position of the left and right sections of the screw. By turning the adjusting knob, the first internal thread in the first through hole is driven to cooperate with the first external thread at different positions of the left section of the screw, and the second internal thread in the second through hole is driven to cooperate with the second external thread at different positions of the right section of the screw.

6. The spreader according to claim 1, characterized in that: The expansion member is an elastic member.

7. The spreader according to claim 6, characterized in that: The elastic component is also coated with plastic.

8. The spreader according to claim 6, characterized in that: The material of the expansion piece is memory stainless steel wire.

9. The spreader according to claim 1, characterized in that: The material of the spreading arm and the angle adjusting member is stainless steel.

10. The spreader according to claim 1, characterized in that: A third screw hole is arranged at the other end of each expansion arm, and a third external thread matching with the third screw hole is arranged at the top of each expansion member. A expansion arm is connected with a corresponding expansion member through the matching of the third screw hole and the third external thread.

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