Arthroscope obturator and arthroscope assembly

Abstract

The embodiment of the utility model provides an arthroscope obturator and an arthroscope assembly, and relates to the field of medical instruments, the arthroscope obturator is used in cooperation with an arthroscope sheathing canal, the arthroscope obturator comprises a guide rod, a sealing column and a limiting cover, one end of the guide rod is connected with the sealing column, and the sealing column is connected with the limiting cover; the guide rod and the sealing column are used for being inserted into the arthroscope sheathing canal, the limiting cover is located outside the arthroscope sheathing canal, and at least part of the edge of the limiting cover protrudes out of the near-end end face of the arthroscope sheathing canal in the radial outward direction of the sealing column. Due to the design of the arthroscope obturator, the operation difficulty can be reduced, time and labor are saved, and the operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical equipment, and particularly relates to a joint mirror obturator and joint mirror assembly. BACKGROUND

[0002] In the clinical treatment process, the joint mirror body is usually used in cooperation with the joint mirror sheath, the joint mirror sheath is placed into the set position of the patient's body, and then the joint mirror body is inserted into the joint mirror sheath, so that the joint mirror body is used for related treatment operation. When the joint mirror sheath is placed, the obturator is first used in cooperation with the joint mirror sheath, and the obturator moves with the joint mirror sheath. When the joint mirror body is needed, the obturator is pulled out, and then the joint mirror body is inserted into the joint mirror sheath. After the joint mirror body is used, the joint mirror body is pulled out, and then the obturator is inserted into the joint mirror sheath to prevent cross infection.

[0003] The inventor found at least the following shortcomings of the prior art in the research:

[0004] After the obturator is inserted into the joint mirror sheath, the four peripheral edges of the obturator are located in the area surrounded by the proximal end face of the joint mirror sheath, and there is no force point on the obturator when the obturator is pulled out, so that the operation is difficult, time-consuming and laborious, and the operation efficiency is low. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a joint mirror obturator and joint mirror assembly, which can reduce the operation difficulty, save time and labor, and improve the operation efficiency.

[0006] The embodiment of the utility model can be realized as follows:

[0007] In a first aspect, the utility model provides a joint mirror obturator for use in cooperation with a joint mirror sheath, comprising:

[0008] A guide rod, a sealing column and a limiting cover, one end of the guide rod is connected with the sealing column, and the sealing column is connected with the limiting cover;

[0009] The guide rod and the sealing column are both used for being inserted into the joint mirror sheath, the limiting cover is located outside the joint mirror sheath, and at least part of the edge of the limiting cover protrudes from the proximal end face of the joint mirror sheath in the radial outward direction of the sealing column.

[0010] In an optional embodiment, the four peripheral edges of the limiting cover all protrude from the proximal end face of the joint mirror sheath in the radial outward direction of the sealing column.

[0011] Based on the above scheme, the four sides of the limiting cover protrude from the proximal end surface of the arthroscope sheath, and the four sides of the limiting cover have force points, which facilitates the pulling out of the arthroscope obturator from the arthroscope sheath, and the operation is more convenient and fast, time and labor are saved.

[0012] In an optional embodiment, the arthroscope obturator further comprises a sealing ring, which is sleeved outside the sealing column.

[0013] Based on the above scheme, the arthroscope obturator is inserted into the arthroscope sheath, the sealing ring is located between the arthroscope sheath and the sealing column, and the sealing ring is deformed after being clamped, thereby improving the sealing performance between the arthroscope obturator and the arthroscope sheath.

[0014] In an optional embodiment, an annular positioning groove is arranged on the outer circumferential surface of the sealing column, and the sealing ring is embedded in the annular positioning groove, so that the sealing ring and the sealing column are relatively fixed in the axial direction of the sealing column.

[0015] Based on the above scheme, the sealing ring is fixed in position by the annular positioning groove, the installation position of the sealing ring is accurate and firm, the sealing ring is not easy to slide during use, and the sealing effect is good. Furthermore, the positioning of the sealing ring can be realized through the annular positioning groove, thereby improving the installation efficiency of the sealing ring.

[0016] In an optional embodiment, a clamping portion is arranged on the outer circumferential surface of the sealing column, and the clamping portion is used to be clamped and matched with the arthroscope sheath after the sealing column is inserted into the arthroscope sheath to a certain depth, so as to limit the freedom degree of the sealing column in the axial direction relative to the arthroscope sheath.

[0017] Based on the above scheme, after the arthroscope obturator is inserted into the arthroscope sheath to a certain depth, the arthroscope sheath is clamped and matched with the clamping portion on the sealing column, thereby improving the combination firmness of the arthroscope obturator and the arthroscope sheath, and the arthroscope obturator is not easy to automatically come out relative to the arthroscope sheath, which is safe and reliable in use.

[0018] In an optional embodiment, the clamping portion is arranged in an annular structure.

[0019] Based on the above scheme, since the clamping portion is in an annular structure, when the arthroscope obturator is inserted into the arthroscope sheath, the step of adjusting the relative position of the arthroscope obturator and the arthroscope sheath in the circumferential direction is omitted, the assembly difficulty is reduced, and the assembly efficiency is improved.

[0020] In an optional embodiment, the clamping portion is arranged in an annular groove.

[0021] Based on the above scheme, the clamping portion has a simple structure, which is convenient for processing and manufacturing.

[0022] In an optional embodiment, a mounting hole is arranged on the side of the sealing column away from the limiting cover, and the guide rod is inserted into the mounting hole.

[0023] Based on the above scheme, the guide rod is positioned through the mounting hole, which not only improves the combination tightness of the guide rod and the sealing column, but also improves the accuracy of the relative position of the guide rod and the sealing column, and improves the assembly quality.

[0024] In an optional embodiment, the guide rod is in interference fit with the mounting hole.

[0025] Based on the above scheme, the guide rod and the mounting hole are in simple and reliable fit.

[0026] In a second aspect, the utility model provides a kind of arthroscope assembly, the arthroscope assembly includes:

[0027] The guide rod and the sealing column are disengagably inserted into the arthroscope sheath tube, and the limiting cover is used to contact with the proximal end surface of the arthroscope sheath tube to limit the insertion depth of the sealing column;At least part of the edge of the limiting cover protrudes the proximal end surface of the arthroscope sheath tube in the radial outward direction of the sealing column.

[0028] The beneficial effects of the embodiments of the utility model include, for example:

[0029] As described above, the arthroscope obturator provided by the embodiment can be used in cooperation with the arthroscope sheath tube, when the arthroscope body is not needed to be configured in the arthroscope sheath tube, the arthroscope obturator needs to be inserted into the arthroscope sheath tube, so as to prevent external impurities from entering the arthroscope sheath tube, prevent body tissue fluid from overflowing from the arthroscope sheath tube, improve the operation safety, and prevent cross infection.When the arthroscope obturator is inserted into the arthroscope sheath tube, the limiting cover of the arthroscope obturator is located on the proximal end outside of the arthroscope sheath tube, and at least part of the edge of the limiting cover protrudes the proximal end surface of the arthroscope sheath tube in the radial outward direction of the sealing column, when the arthroscope obturator needs to be pulled out, the position of the limiting cover protruding the arthroscope sheath tube can provide a force point for the operator, and the operation is not easy to slip, the operation difficulty is reduced, the operation is time-saving and labor-saving, and the efficiency of pulling out the arthroscope obturator is improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as the limitation to the scope, and for the ordinary skilled in the art, other related drawings can also be obtained according to these drawings without creating creative labor.

[0031] Figure 1 A schematic view of a laparoscopic obturator according to an embodiment of the present application;

[0032] Figure 2 A cross-sectional schematic view of a laparoscopic obturator according to an embodiment of the present application;

[0033] Figure 3 A partial schematic view of a laparoscopic obturator according to an embodiment of the present application;

[0034] Figure 4 A schematic view of a laparoscopic assembly according to an embodiment of the present application;

[0035] Figure 5 A cross-sectional schematic view of a laparoscopic assembly according to an embodiment of the present application;

[0036] Figure 6 A schematic view of a laparoscopic sheath according to an embodiment of the present application.

[0037] Figure:

[0038] 001 - laparoscopic obturator; 100 - guide rod; 130 - sealing post; 131 - first shaft body; 132 - second shaft body; 133 - assembly hole; 134 - annular positioning groove; 135 - clamping portion; 136 - annular surface; 150 - limiting cap; 170 - sealing ring; 002 - laparoscopic sheath; 200 - tube body; 230 - clamping arm; 231 - clamping end. DETAILED DESCRIPTION

[0039] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0041] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0042] In the description of the utility model, it needs to be explained that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the product of the application when it is usually placed, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the utility model.

[0043] In addition, if the terms "first", "second" and the like are used only to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0044] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.

[0045] In the prior art, when the obturator is inserted into the arthroscope sheath 002, the outer peripheral edge of the part of the obturator located outside the proximal end of the arthroscope sheath 002 is basically flush with the edge of the tube opening of the arthroscope sheath 002, so that when force is applied to the obturator to pull it out of the arthroscope sheath 002, there is no force point on the obturator, the force is constant, it is easy to slip, time-consuming and laborious, and the efficiency is low.

[0046] In view of this, the designer provides an arthroscope obturator 001 which can provide a force point, facilitate pulling away from the arthroscope sheath 002, save time and labor in operation, and has high efficiency.

[0047] Please refer to Figures 1-3 The embodiment provides an arthroscope obturator 001 which is used in cooperation with an arthroscope sheath 002 and comprises a guide rod 100, a sealing column 130 and a limiting cover 150, one end of the guide rod 100 is connected with the sealing column 130, the sealing column 130 is connected with the limiting cover 150; the guide rod 100 and the sealing column 130 are both used for being inserted into the arthroscope sheath 002, the limiting cover 150 is located outside the arthroscope sheath 002, and at least part of the edge of the limiting cover 150 protrudes outward from the proximal end surface of the arthroscope sheath 002 in the radial direction of the sealing column 130.

[0048] As described above, the working mode of the arthroscope obturator 001 of the embodiment includes, for example:

[0049] The arthroscope obturator 001 can be used in cooperation with the arthroscope sheath 002. When the arthroscope sheath 002 does not need to be configured with the arthroscope body, the arthroscope obturator 001 needs to be inserted into the arthroscope sheath 002, so as to prevent external impurities from entering the arthroscope sheath 002 and prevent the body fluid from overflowing from the arthroscope sheath 002, improve the safety of the operation, and prevent cross infection. For example, in the case that the arthroscope sheath 002 is placed in the corresponding position of the human body in the initial stage of the operation, or the arthroscope body is withdrawn from the arthroscope sheath 002 during the operation, etc., the arthroscope obturator 001 needs to be inserted into the arthroscope sheath 002.

[0050] When the arthroscope obturator 001 is inserted into the arthroscope sheath 002, the limiting cover 150 of the arthroscope obturator 001 is located outside the proximal end of the arthroscope sheath 002, and at least part of the edge of the limiting cover 150 protrudes from the proximal end surface of the arthroscope sheath 002 in the radial outward direction of the sealing column 130. When the arthroscope obturator 001 needs to be pulled out, the position where the limiting cover 150 protrudes from the arthroscope sheath 002 can provide a force point for the operator, so that the operation is not easy to slip, the operation difficulty is reduced, the operation is time-saving and labor-saving, and the efficiency of pulling out the arthroscope obturator 001 is improved.

[0051] The following embodiments illustrate the details of the arthroscope obturator 001 of the present application by way of example.

[0052] Please refer to Figures 1-3 In the embodiment, optionally, the arthroscope obturator 001 comprises a guide rod 100, a sealing column 130 and a limiting cover 150. The guide rod 100 is connected with the sealing column 130, the sealing column 130 is connected with the limiting cover 150, and at least part of the outer edge of the limiting cover 150 protrudes from the outer peripheral surface of the sealing column 130. In use, the arthroscope obturator 001 is used for insertion into the arthroscope sheath 002. Specifically, the guide rod 100 and the sealing column 130 can be inserted into the arthroscope sheath 002 from the proximal end of the arthroscope sheath 002, and the limiting cover 150 is located outside the proximal end of the arthroscope sheath 002. Moreover, at least part of the outer edge of the limiting cover 150 protrudes from the proximal end surface of the arthroscope sheath 002. In this way, when the arthroscope obturator 001 needs to be pulled out of the arthroscope sheath 002, the operator applies force to the position where the limiting cover 150 protrudes from the outside of the arthroscope sheath 002, that is, the part of the limiting cover 150 protruding from the outside of the arthroscope sheath 002 provides a force point for the operator, so that the operation is not easy to slip, time-saving and labor-saving, and the efficiency is high.

[0053] It should be noted that the guide rod 100, the sealing column 130 and the limiting cover 150 can be provided as an integrated structure, which is convenient for processing and manufacturing, has high overall structural strength, and has a long service life.

[0054] Optionally, the guide rod 100 is provided as a cylindrical rod, and the distal end of the guide rod 100 is provided with a chamfer, which can be a rounded chamfer. When the guide rod 100 is matched with the arthroscope sheath 002, the distal end of the guide rod 100 is inserted into the arthroscope sheath 002, which is convenient and fast to operate.

[0055] Optionally, the sealing column 130 is substantially a cylinder, and the distal end of the sealing column 130 is provided with an assembly hole 133, which is a blind hole, and the cross-sectional profile of the assembly hole 133 is circular. The guide rod 100 is inserted into the assembly hole 133, and the guide rod 100 and the assembly hole 133 can be an interference fit, which is simple in structure and firm and reliable in combination. Obviously, in other embodiments, the guide rod 100 and the assembly hole 133 can also be fixed by welding, bonding or the like. After the guide rod 100 and the assembly hole 133 are matched, they are coaxially arranged, which facilitates the insertion of the guide rod 100 and the sealing column 130 into the arthroscope sheath 002.

[0056] Please refer to Figure 3 Optionally, the sealing column 130 includes coaxial first and second shaft bodies 131 and 132, the end face of the first shaft body 131 away from the second shaft body 132 is a distal end face, and the assembly hole 133 is arranged on the distal end face of the first shaft body 131. The outer diameter of the second shaft body 132 is greater than that of the first shaft body 131, and the end face of the second shaft body 132 connected with the first shaft body 131 forms an annular face 136, which is a conical face. The cross-sectional outer diameter of the conical face gradually increases in the direction from the distal end to the proximal end of the sealing column 130, so that the conical face has a guiding effect. At the same time, the outer peripheral surface of the first shaft body 131 is provided with an annular positioning groove 134, which is located on the side of the clamping portion 135 close to the distal end of the sealing column 130. A sealing ring 170 can be assembled in the annular positioning groove 134, and the sealing ring 170 can be a rubber ring or the like. The outer peripheral surface of the second shaft body 132 is provided with the clamping portion 135, which can be provided as a groove or a protrusion, and the clamping portion 135 can be an annular structure, so as to better realize the clamping and matching with the arthroscope sheath 002. For example, in this embodiment, the clamping portion 135 is provided as an annular groove.

[0057] Optionally, in this embodiment, the limiting cover 150 is a disc structure, the limiting cover 150 is connected with the second shaft body 132 of the sealing column 130, and the two are coaxially arranged. The diameter of the limiting cover 150 is greater than that of the second shaft body 132, so that the peripheral edges of the limiting cover 150 all protrude outwardly from the outer peripheral surface of the second shaft body 132 in the radial direction of the second shaft body 132. The peripheral edges of the limiting cover 150 can all provide a force point, which is beneficial to pulling out the arthroscope sheath 002 by the arthroscopy obturator 001.

[0058] The joint arthroscope obturator 001 provided by the embodiment is characterized in that the diameter of the limiting cover 150 is designed to be increased, so that when the joint arthroscope obturator 001 is inserted into the joint arthroscope sheath 002, the four edges of the limiting cover 150 can protrude from the proximal end surface of the joint arthroscope sheath 002, and the four edges of the limiting cover 150 can form force points, so that the operator can easily pull out the joint arthroscope obturator 001 from the joint arthroscope sheath 002, and the operation is time-saving, labor-saving and efficient.

[0059] Please refer to Figures 4-6 The joint arthroscope assembly provided by the embodiment comprises the joint arthroscope sheath 002 and the joint arthroscope obturator 001, the guide rod 100 and the sealing column 130 are detachably inserted into the joint arthroscope sheath 002, and the limiting cover 150 is used to contact the proximal end surface of the joint arthroscope sheath 002 to limit the insertion depth of the sealing column 130. That is, the limiting cover 150 can directly abut against the proximal end surface of the joint arthroscope sheath 002, or the limiting cover 150 can have a spacing from the proximal end surface of the joint arthroscope sheath 002, as long as the insertion depth of the guide rod 100 and the sealing column 130 is ensured. At least part of the edges of the limiting cover 150 protrude from the proximal end surface of the joint arthroscope sheath 002 in the radial outward direction of the sealing column 130.

[0060] Optionally, the joint arthroscope sheath 002 comprises a tube body 200 and two clamping arms 230, the two clamping arms 230 are elastically connected with the tube body 200, the distal ends of the two clamping arms 230 are spaced from the outer circumferential surface of the tube body 200, the proximal ends of the two clamping arms 230 are provided with bending sections, the end portions of the bending sections are clamping ends 231, the clamping ends 231 are located in the lumen of the tube body 200 and close to the proximal end of the tube body 200. The two clamping arms 230 are arranged in a central symmetry, and in the initial state, the two clamping ends 231 are located in the lumen and have the minimum distance. By pressing the distal ends of the two clamping arms 230, the clamping ends 231 of the two clamping arms 230 can be driven to move outward, and the distance between the two clamping ends 231 is increased. When the external force disappears, the clamping ends 231 can move inward and reset due to the elastic force of the clamping arms 230.

[0061] In actual operation, the distal end of the arthroscope obturator 001 is inserted into the proximal end of the tube body 200, the guide rod 100 and the sealing column 130 first enter the tube body 200, when the annular surface 136 on the sealing column 130 contacts the two clamping ends 231, the two clamping ends 231 are automatically opened under the guidance of the annular surface 136, the clamping arms 230 are elastically deformed, and have elastic force to restore the deformation, as the insertion depth increases, the clamping ends 231 pass the annular surface 136 and reach the clamping portion 135, because the clamping portion 135 is an annular groove, the annular groove loses the support for the clamping ends 231, under the action of the elastic force of the clamping arms 230, the two clamping ends 231 move inward and are clamped in the annular groove, the arthroscope obturator 001 and the arthroscope sheath 002 are clamped and matched, the arthroscope obturator 001 is not easy to be pulled out of the arthroscope sheath 002, and use is safe. Because the clamping portion 135 is an annular structure, the arthroscope obturator 001 can rotate relative to the arthroscope sheath 002, the relative position of the two in the circumferential direction is convenient to adjust, use is flexible, and different operation scenes are adapted to. When the arthroscope obturator 001 needs to be pulled away, the operator can simultaneously apply force to the distal ends of the two clamping arms 230 with one hand, press the distal ends, the clamping arms 230 rotate relative to the tube body 200, the clamping ends 231 are driven to move outward, the clamping ends 231 are away from the clamping portion 135, then the other hand is used to scratch the inner side surface of the limiting cover 150, so that the arthroscope obturator 001 and the arthroscope sheath 002 are away from each other, and operation is convenient and fast.

[0062] It should be understood that when the arthroscope obturator 001 and the arthroscope sheath 002 are clamped and matched, the position where the clamping ends 231 and the clamping portion 135 are matched is located on the side close to the limiting cover 150 of the sealing ring 170, that is, on the proximal end side of the sealing ring 170, the tissue fluid in the tube body 200 is not easy to reach the position where the clamping ends 231 and the clamping portion 135 are located, and is not easy to accumulate at the clamping portion 135, and cleaning is facilitated.

[0063] It should be noted that, except for special description, the reference standards of the proximal end and the distal end in the embodiment are consistent, the proximal end is the end close to the operator, and the distal end is the end close to the patient.

[0064] The arthroscope assembly provided in the embodiment is closely matched with the arthroscope obturator 001 and the arthroscope sheath 002, and convenient and fast operation is achieved.

[0065] The above merely illustrates the specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. An arthroscopic obturator for use in conjunction with an arthroscopic sheath (002), characterized in that, Comprising: a guide rod (100), a sealing post (130) and a limiting cover (150), one end of the guide rod (100) is connected with the sealing post (130), the sealing post (130) is connected with the limiting cover (150); the guide rod (100) and the sealing post (130) are both used for inserting into the arthroscope sheath (002), the limiting cover (150) is located outside the arthroscope sheath (002), and at least part of the edge of the limiting cover (150) protrudes the proximal end surface of the arthroscope sheath (002) in the radial outward direction of the sealing post (130).

2. The arthroscope obturator according to claim 1, wherein: the four peripheral edges of the limiting cover (150) all protrude the proximal end surface of the arthroscope sheath (002) in the radial outward direction of the sealing post (130).

3. The arthroscope obturator according to claim 1, wherein: the arthroscope obturator further comprises a sealing ring (170), the sealing ring (170) is sleeved outside the sealing post (130).

4. The arthroscope obturator according to claim 3, wherein: an annular positioning groove (134) is arranged on the outer peripheral surface of the sealing post (130), the sealing ring (170) is embedded in the annular positioning groove (134), so that the sealing ring (170) and the sealing post (130) are relatively fixed in the axial direction of the sealing post (130).

5. The arthroscope obturator according to any one of claims 1-4, wherein: a clamping portion (135) is arranged on the outer peripheral surface of the sealing post (130), the clamping portion (135) is used for clamping and matching with the arthroscope sheath (002) after the sealing post (130) is inserted into the arthroscope sheath (002) to a certain depth, so as to limit the freedom degree of the sealing post (130) in the axial direction relative to the arthroscope sheath (002).

6. The arthroscope obturator according to claim 5, wherein: the clamping portion (135) is arranged in an annular structure.

7. The arthroscope obturator according to claim 6, wherein: the clamping portion (135) is arranged as an annular groove.

8. The arthroscope obturator according to claim 1, wherein: an assembly hole (133) is arranged on the side surface of the sealing post (130) away from the limiting cover (150), and the guide rod (100) is inserted into the assembly hole (133).

9. The arthroscope obturator according to claim 8, wherein: the guide rod (100) is in interference fit with the assembly hole (133).

10. An arthroscopic assembly comprising: The arthroscope assembly comprises: The arthroscopic sheath (002) and the arthroscopic obturator (001) of any one of claims 1-9, the guide rod (100) and the sealing post (130) are detachably inserted into the arthroscopic sheath (002), the limiting cover (150) is used to contact with the proximal end face of the arthroscopic sheath (002) to limit the insertion depth of the sealing post (130); at least part of the edge of the limiting cover (150) protrudes the proximal end face of the arthroscopic sheath (002) in the radial outward direction of the sealing post (130).

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