Surgical approach cannula and retractor device
By designing a rotatable hook rod and a limiting device that connects the sleeve and hook, the inconvenience caused by the fixed connection between the hook and the sleeve in the existing technology is solved, thus simplifying the surgical procedure and improving efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 2020 (BEIJING) MEDICAL TECH CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-15
AI Technical Summary
In current surgical procedures, the retractor and cannula are fixedly connected, which cannot be flexibly adjusted, resulting in inconvenience and increasing the complexity and time cost of surgical operations.
Design a surgical access cannula and retractor device, wherein the rod of the retractor body is rotatably inserted into the mounting hole of the limiting member, allowing the cannula and retractor to rotate and adjust together during the operation, and positioning is achieved by the limiting member such as a retaining ring or elastic protrusion, and the rod is detachably connected to the handle or hook head.
It enables flexible adjustment of the cannula and retractor, simplifies surgical procedures, and improves ease of use and efficiency.
Smart Images
Figure CN224235505U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical device technology, and in particular to a surgical access cannula and retractor device. Background Technology
[0002] In surgical procedures, access cannulas and retractors are commonly used auxiliary instruments. Access cannulas are used to establish a surgical channel, facilitating the entry and exit of surgical instruments; retractors are used to retract tissue and expose the surgical field. Traditionally, these two instruments are used separately, increasing the complexity and time cost of the procedure. In recent years, to improve surgical efficiency, some devices integrating retractors and cannulas have appeared on the market. However, in existing technologies, the retractor is fixedly connected to the outer wall of the cannula. The retractor must maintain a certain angle or position during surgery, thus fixing the cannula's position. This prevents flexible adjustments to the relative positions of the hook and cannula according to the actual surgical situation, making it inconvenient to use and requiring further improvement. Utility Model Content
[0003] To facilitate the adjustment of the retractor and cannula, this application provides a surgical access cannula and retractor device.
[0004] The surgical access cannula and retractor device provided in this application adopt the following technical solution:
[0005] A surgical access cannula and retractor device includes a cannula body and a retractor body disposed on the outside of the cannula body. The retractor body includes a rod, a handle disposed on the upper end of the rod, and a hook head disposed on the lower end of the rod. A limiting member is provided on the outer wall of the cannula body, and the limiting member has an installation hole. The rod rotates through the installation hole.
[0006] By adopting the above technical solution, the rod of the hook body rotates through the mounting hole of the limiting component, simultaneously realizing the functions of the access sleeve and the hook. During the operation, the rod can rotate within the mounting hole, allowing the sleeve body and the limiting component to rotate and adjust together around the axis of the rod, making it more convenient to use.
[0007] Preferably, the limiting member is a limiting sleeve, which is fixedly connected to the outer wall of the sleeve body. The inner hole of the limiting sleeve is an installation hole, and the handle and / or hook head is detachably connected to the rod body.
[0008] By adopting the above technical solution, the handle and / or hook can be detachably connected to the rod body. After the rod body is inserted into the mounting hole, the handle or hook is then installed, thus achieving the connection between the hook body and the limiting component.
[0009] Preferably, the rod and the handle are threaded together.
[0010] Preferably, the rod and the hook are threaded together.
[0011] Preferably, the limiting component is a retaining ring, which is fixedly connected to the outer wall of the sleeve body. The inner hole of the retaining ring is a mounting hole. The outer wall of the retaining ring away from the sleeve body has a channel communicating with the mounting hole. The width of the channel is smaller than the outer diameter of the rod body. The rod body is inserted into the mounting hole through the channel.
[0012] By adopting the above technical solution, the limiting component uses a retaining ring, and the retaining ring has a channel, so that the rod can be inserted into the installation hole through the channel, which facilitates the installation and disassembly of the hook body.
[0013] Preferably, there are two limiting members, which are respectively located at the upper and lower parts of the sleeve body.
[0014] By adopting the above technical solution, two limiting components are respectively set at the upper and lower parts of the sleeve body to restrict the axial sliding of the rod.
[0015] Preferably, the opening of the channel on the side away from the sleeve body is flared.
[0016] By adopting the above technical solution, the opening on the side of the channel away from the sleeve body is flared, which makes it easier for the rod to be inserted into the installation hole through the channel.
[0017] Preferably, the limiting member is provided with an elastic protrusion protruding from the inner wall of the mounting hole, and the outer peripheral wall of the rod body is provided with a groove along the axial direction for the elastic protrusion to be embedded in, and the groove is provided in multiple ways and distributed around the axis of the rod body.
[0018] By adopting the above technical solution, the elastic protrusion of the limiting component is embedded in the groove of the rod body, which can play a positioning role after the hook body and the sleeve body rotate to a suitable position. The multiple grooves distributed around the axis of the rod body can enable the sleeve body to be positioned at multiple different angles.
[0019] In summary, this utility model has the following beneficial effects:
[0020] 1. The rod of the hook body rotates through the mounting hole of the limiting component, simultaneously realizing the functions of the inlet cannula and the hook. During the operation, the rod can rotate within the mounting hole, allowing the cannula body and the limiting component to rotate and adjust together around the axis of the rod, making it more convenient to use.
[0021] 2. The limiting component uses a retaining ring with a channel, allowing the rod to be inserted into the mounting hole through the channel, facilitating the installation and disassembly of the hook body;
[0022] 3. The elastic protrusion of the limiting component is embedded in the groove of the rod body, which can play a positioning role after the hook body and the sleeve body rotate to a suitable position. The multiple grooves distributed around the axis of the rod body can enable the sleeve body to be positioned at multiple different angles. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of a surgical access cannula and retractor device in Example 1;
[0024] Figure 2 This is a schematic diagram of the limiting sleeve in Example 1;
[0025] Figure 3 This is a schematic diagram of the hook body in Example 1;
[0026] Figure 4 This is a schematic diagram of the limiting sleeve and the rod in Example 2;
[0027] Figure 5 This is a schematic diagram of the overall structure of a surgical access cannula and retractor device in Example 3;
[0028] Figure 6 This is a schematic diagram of the limiting sleeve in Example 3.
[0029] In the figure, 1 is the sleeve body; 2 is the hook body; 21 is the rod body; 211 is the first stud; 212 is the second threaded hole; 213 is the groove; 22 is the handle; 221 is the first threaded hole; 23 is the hook head; 231 is the second stud; 3 is the limiting component; 31 is the mounting hole; 32 is the elastic protrusion; and 33 is the channel. Detailed Implementation
[0030] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.
[0031] Example 1:
[0032] This application discloses a surgical access cannula and a retractor device, referring to... Figure 1 , Figure 2 The sleeve includes a sleeve body 1 and a hook body 2 disposed on the outside of the sleeve body 1. A limiting member 3 is provided on the outer wall of the sleeve body 1, and the limiting member 3 has an installation hole 31. In this embodiment, the limiting member 3 is a limiting sleeve, which is integrally fixedly connected to the outer wall of the sleeve body 1. The inner hole of the limiting sleeve is the installation hole 31. The upper end face of the limiting sleeve is flush with the upper end face of the sleeve body 1, and the lower end face of the limiting sleeve extends to the lower part of the sleeve body 1. Both the limiting sleeve and the sleeve body 1 are rigid tubes. In this embodiment, both the sleeve body 1 and the limiting sleeve can be made of PVC or stainless steel.
[0033] Reference Figure 1 , Figure 3The hook body 2 includes a rod 21 rotatably passing through a mounting hole 31, a handle 22 located at the upper end of the rod 21, and a hook head 23 located at the lower end of the rod 21. The handle 22 is located above the limiting sleeve, and the hook head 23 is located below the limiting sleeve. The handle 22 and / or the hook head 23 are detachably connected to the rod 21. In this embodiment, the rod 21 and the handle 22 are threadedly connected. Specifically, a first threaded hole 221 is opened on the lower end face of one end of the handle 22, and a first stud 211 threadedly connected to the first threaded hole 221 is coaxially fixedly connected to the upper end of the rod 21. The hook head 23 is threadedly connected to the rod 21. Specifically, a second threaded hole 212 is coaxially opened on the lower end of the rod 21, and a second stud 231 threadedly connected to the second threaded hole 212 is protruding and fixedly fixed on the upper part of the hook head 23.
[0034] The implementation principle of the surgical access cannula and hook device in this application embodiment is as follows: the rod 21 of the hook body 2 is rotatably inserted into the mounting hole 31 of the limiting member 3, thus realizing the functions of the access cannula and the hook. During the operation, the rod 21 can rotate within the mounting hole 31, which allows the cannula body 1 and the limiting member 3 to rotate and adjust together around the axis of the rod, making it more convenient to use.
[0035] Example 2:
[0036] The difference from Example 1 is that, referring to Figure 4 The limiting sleeve is a PVC sleeve, integrally formed with elastic protrusions 32 protruding from the inner wall of the mounting hole 31. Multiple elastic protrusions 32 are arranged around the axis of the limiting sleeve. The outer peripheral wall of the rod 21 has axially formed grooves 213 for the elastic protrusions 32 to be embedded in. Multiple grooves 213 are arranged around the axis of the rod 21. The elastic protrusions 32 of the limiting member 3 are embedded in the grooves 213 of the rod 21, and can play a positioning role after the limiting sleeve rotates relative to the rod 21 to a suitable position.
[0037] Example 3:
[0038] The difference from Example 1 is that, referring to Figure 5 , Figure 6 The limiting component 3 is a retaining ring, which is made of plastic, such as PVC, ultra-high molecular weight polyethylene, or polytetrafluoroethylene. The retaining ring is fixedly connected to the outer wall of the sleeve body 1, and its inner hole is the mounting hole 31. Two retaining rings are provided, fixedly connected to the upper and lower parts of the sleeve body 1 respectively, and located between the handle 22 and the hook head 23. A channel 33 is opened on the outer wall of the retaining ring away from the sleeve body 1, communicating with the mounting hole 31. The width of the channel 33 is smaller than the outer diameter of the rod 21, and the opening of the channel 33 away from the sleeve body 1 is flared. When the operator applies force to the rod 21, the rod 21 is inserted into the mounting hole 31 through the channel 33.
[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A surgical access cannula and retractor device, characterized in that: The sleeve body (1) includes a sleeve body (1) and a hook body (2) disposed on the outside of the sleeve body (1). The hook body (2) includes a rod (21), a handle (22) disposed on the upper end of the rod (21), and a hook head (23) disposed on the lower end of the rod (21). The outer wall of the sleeve body (1) is provided with a limiting member (3). The limiting member (3) has an installation hole (31). The rod (21) is rotatably inserted into the installation hole (31).
2. The surgical access cannula and retractor device according to claim 1, characterized in that: The limiting component (3) is a limiting sleeve, which is fixedly connected to the outer wall of the sleeve body (1). The inner hole of the limiting sleeve is an installation hole (31). The handle (22) and / or hook (23) are detachably connected to the rod body (21).
3. The surgical access cannula and retractor device according to claim 2, characterized in that: The rod (21) and the handle (22) are threaded together.
4. The surgical access cannula and retractor device according to claim 2, characterized in that: The rod (21) and the hook (23) are threaded together.
5. The surgical access cannula and retractor device according to claim 1, characterized in that: The limiting component (3) is a retaining ring, which is fixedly connected to the outer wall of the sleeve body (1). The inner hole of the retaining ring is an installation hole (31). The outer wall of the retaining ring away from the sleeve body (1) has a channel (33) that communicates with the installation hole (31). The width of the channel (33) is smaller than the outer diameter of the rod (21). The rod (21) is inserted into the installation hole (31) through the channel (33).
6. The surgical access cannula and retractor device according to claim 5, characterized in that: There are two limiting members (3), which are respectively located at the upper and lower parts of the sleeve body (1).
7. The surgical access cannula and retractor device according to claim 5, characterized in that: The opening of the channel (33) on the side away from the sleeve body (1) is flared.
8. The surgical access cannula and retractor device according to claim 1, characterized in that: The limiting member (3) is provided with an elastic protrusion (32) protruding from the inner wall of the mounting hole (31). The outer peripheral wall of the rod (21) is provided with a groove (213) for the elastic protrusion (32) to be embedded in. The groove (213) is provided in multiple places and distributed around the axis of the rod (21).