One-click locking flexible shaft retractor and matching brain pressure plate

Abstract

This utility model relates to a one-button locking flexible shaft retractor and its matching brain repression plate, belonging to the field of medical device technology. It includes a flexible shaft retractor and a brain repression plate. The flexible shaft retractor includes a plate clamp assembly, a flexible shaft body, and a fixing seat. The plate clamp assembly includes a fixing rod, an outer sleeve, a spring, a steel ball, and an end cap. The brain repression plate includes a round handle and a pressure plate. This utility model enables one-button locking of the brain repression plate, which is simple and quick to operate, saves operation time, improves surgical efficiency, provides a good instrument operation experience, and ensures consistent locking firmness, greatly reducing surgical risks. It prevents slippage or wobbling due to incomplete locking and avoids the "cold" feeling caused by direct contact between metal instruments and human tissue. The parallel fixing method of the brain repression plate and the flexible shaft retractor in this utility model makes clinical use more convenient, improves the stability of locking and fixing, reduces material costs, and increases the clinical surgical operating space.

Description

Technical Field

[0001] This utility model relates to a one-click locking flexible shaft retractor and a matching brain pressure plate, belonging to the field of medical device technology. Background Technology

[0002] Flexible retractors and brain retractors are mainly used in neurosurgery. In use, the fixed end of the flexible retractor is fixed to the surgical head frame or other instruments, while its functional end holds the brain retractor, which dissects the brain tissue to complete the predetermined surgical procedure.

[0003] The structural principle of existing flexible shaft retractors for fixing brain pressure plates is as follows:

[0004] like Figure 7 As shown, the brain pressure plate is a flat brain pressure plate 4. The existing flexible shaft retractor A3 moves the locking nut A31 to move the part A32 closer to the part B33, thus clamping and fixing the flat brain pressure plate 4.

[0005] like Figure 8 As shown, the brain pressure plate is a brain pressure plate 6 with a round handle. The existing flexible shaft retractor B5 rotates the locking nut B51, which drives part C52 to move closer to part D53, thereby clamping and fixing the brain pressure plate with the round handle.

[0006] The existing flexible shaft retractor and its associated brain pressure plate have the following structural problems due to their structural principle:

[0007] 1. The process of the flexible shaft retractor clamping the head pressure plate requires rotating the locking nut 3-5 times to complete the locking operation, which is cumbersome and inefficient.

[0008] 2. The locking nut of the existing flexible shaft retractor is small, making it difficult to lock and requiring a lot of force to complete the locking operation; after multiple locking operations, it will feel rough to the hand, resulting in a poor user experience.

[0009] 3. Due to the different hand strengths of different operators, the clamping force of the existing flexible shaft retractor on the brain retractor is also different: when the clamping force is large, a large force is also required to release it, and the threads of the locking nut are easily damaged, reducing the service life of the instrument; when the clamping force is small, there is a risk that the brain retractor will not be clamped tightly, affecting the surgical operation.

[0010] 4. When the existing flexible shaft retractor A clamps the planar brain retractor plate through the planes of two parts, the contact area between the flexible shaft retractor A and the brain retractor plate is small, and the friction is also small. Therefore, the brain retractor plate is prone to swinging, that is, the locking is not secure, which seriously affects the surgical operation and increases the surgical risk.

[0011] 5. When the existing flexible shaft retractor is locked in conjunction with the brain retractor, the brain retractor is perpendicular to the flexible shaft retractor. In actual clinical use, the flexible shaft must be bent by 90° and then the brain retractor must be rotated by 90° to operate normally. This fixing method increases the bending shape and actual length of the flexible shaft retractor, reduces the stability of the flexible shaft retractor after locking, and makes the flexible shaft retractor occupy a large space, which may affect the normal use of other instruments or equipment. Utility Model Content

[0012] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a one-click locking flexible shaft retractor and a matching brain pressure plate. The operation of locking the brain pressure plate with the flexible shaft retractor is simple, time-saving, labor-saving, convenient, quick, safe and reliable. At the same time, it reduces the bending of the flexible shaft retractor in the middle after locking and improves the stability after locking.

[0013] The one-click locking flexible shaft retractor and matching brain repression plate of this utility model include a flexible shaft retractor and a brain repression plate; the flexible shaft retractor includes, from front to back, a plate clamp assembly, a flexible shaft body and a fixing seat; the plate clamp assembly is used to clamp the matching brain repression plate, and the fixing seat is used to connect the surgical head frame or other instruments.

[0014] The plate clamp assembly includes a fixing rod, an outer sleeve, a spring, a steel ball, and an end cap; the end cap is fixedly connected to one end of the outer sleeve, the fixing rod passes through the end cap and the outer sleeve, the spring is sleeved on the fixing rod and clamped between the cylindrical boss of the outer sleeve and the fixing rod; a through hole is machined along the central axis of the fixing rod, and a tapered hole for holding the steel ball is provided on the side wall of the fixing rod;

[0015] The brain pressure plate includes a round handle and a pressure plate, which are fixedly connected. The round handle is provided with a ball socket, the size of which is the same as that of a steel ball. The ball socket and the steel ball cooperate to lock the brain pressure plate.

[0016] The technical solution of this utility model is to provide a one-click locking flexible shaft retractor and a matching brain pressure plate. When in use, the round handle of the brain pressure plate is inserted into the through hole on the fixing rod, and the brain pressure plate is locked by the steel ball. The locking method is simple and quick, and after locking, the brain pressure plate is parallel to the flexible shaft retractor.

[0017] Preferably, on one end face of the fixing rod, there is an arc-shaped notch at the same circumferential position as the tapered hole.

[0018] Preferably, the end cap has a tapered hole along its central axis, which acts to press down the steel ball when the outer sleeve and the end cap slide together toward the spring side.

[0019] Preferably, one end of the round handle has a square groove, and the pressure plate is inserted into the square groove and laser welded to the round handle; the other end of the round handle has an inclined surface, and a round groove is formed on the circumferential side of the round handle, the round groove connecting the inclined surface and the ball socket.

[0020] Preferably, after the brain pressure plate and the flexible shaft retractor are locked together, the brain pressure plate is parallel to the flexible shaft retractor.

[0021] Preferably, the pressure plate is softened so that the doctor can plastically bend it to the desired shape before pressing on brain tissue.

[0022] Preferably, the surface of the pressure plate is coated with an elastic resin coating, so that the pressure plate will not scratch the brain tissue when it comes into contact with the brain tissue, thus protecting the brain tissue.

[0023] Preferably, the brain retractor comes in 5 sizes, which can be distinguished by the width of the retractor. The widths of the retractors are 6mm, 7.5mm, 10mm, 12.5mm and 15mm respectively. The operator can select the appropriate size of brain retractor according to the actual clinical needs.

[0024] The advantages of this utility model compared with the prior art are:

[0025] 1. When locking the brain retractor with the flexible shaft retractor, simply pull the outer sleeve towards the side closest to the brain retractor, insert the brain retractor, and then release the outer sleeve to achieve one-click locking of the brain retractor; the operation is simple and quick, saving operation time, reducing patient waiting time, and improving surgical efficiency.

[0026] 2. When pulling the outer cover, only the spring force needs to be overcome, which requires less force and is less effort than turning the locking nut in the existing technology. Even if the locking is done multiple times in one operation, it will not cause any discomfort to the hand, and the instrument operation experience is better.

[0027] 3. The locking method of this utility model avoids the problem of different locking conditions caused by different hand strength of the operator, and the locking firmness is the same, which greatly reduces the surgical risk.

[0028] 4. This utility model is a locking method in which the steel ball and the socket fit together tightly, which is more secure and reliable than the existing method of clamping the brain pressure plate with the planes of two parts. It will not cause the brain pressure plate to slip or swing due to lack of locking.

[0029] 5. In this utility model, after the flexible shaft retractor locks the matching brain pressure plate, the brain pressure plate is parallel to the flexible shaft retractor, whereas the existing locking method places the brain pressure plate perpendicular to the flexible shaft retractor. This change in locking method alters the direction of the brain pressure plate from perpendicular to the flexible shaft retractor, resulting in the following advantages:

[0030] (1) When the existing technology is fixed in the vertical direction, it is necessary to add a bending shape in the middle of the flexible shaft retractor; the parallel fixing method of this utility model does not require an additional bending shape of the flexible shaft retractor, which is more convenient for clinical use.

[0031] (2) The parallel fixing method of this utility model does not require additional bending shape in the middle of the flexible shaft puller, thus shortening the length of the flexible shaft puller, improving the stability of the locking and fixing of the flexible shaft puller, and reducing the material cost of the flexible shaft puller manufacturer.

[0032] (3) During clinical surgical procedures, a number of surgical instruments or equipment are usually used at the same time. The parallel fixation method of this utility model does not require additional bending shape of the flexible shaft retractor in the middle, so that the flexible shaft retractor occupies less space, reduces the obstruction to other instruments or equipment around the flexible shaft retractor, and increases the space for clinical surgical procedures.

[0033] 6. The resin coating on the surface of the brain pressure plate is softer than other coated or uncoated instruments, providing a higher level of protection for brain tissue when in contact with it, while avoiding the "cold" feeling that comes from direct contact between metal instruments and human tissue. Attached Figure Description

[0034] Figure 1 This is a schematic diagram illustrating the structural principle of the flexible shaft retractor and the brain pressure plate locking mechanism of this utility model.

[0035] Figure 2 This is a schematic diagram of the structure of the flexible shaft puller of this utility model;

[0036] Figure 3 This is a structural schematic diagram of the plate clamp assembly;

[0037] Figure 4 This is a schematic diagram of the structure of the brain pressure plate of this utility model;

[0038] Figure 5 This is a schematic diagram of the round handle;

[0039] Figure 6 yes Figure 5 AA section view;

[0040] Figure 7 This is a structural schematic diagram of the existing flexible shaft retractor A fixed plane style brain depressor plate;

[0041] Figure 8 This is a schematic diagram of the existing flexible shaft retractor B with a fixed round handle and pressure plate.

[0042] In the diagram: 1. Flexible shaft puller; 11. Clamp assembly; 111. Fixing rod; 1111. Tapered hole; 1112. Arc-shaped notch; 1113. Cylindrical boss; 1114. Through hole; 112. Outer sleeve; 113. Spring; 114. Steel ball; 115. End cap; 1151. Tapered hole; 12. Flexible shaft body; 13. Fixing seat; 2. Head pressure plate; 21. Round handle; 211. Inclined surface; 212. Round groove; 213. Ball socket; 214. Square groove; 22. Pressure plate; 3. Flexible shaft puller A; 31. Locking nut A; 32. Part A; 33. Part B; 4. Flat head pressure plate; 5. Flexible shaft puller B; 51. Locking nut B; 52. Part C; 53. Part D; 6. Head pressure plate with round handle. Detailed Implementation

[0043] The present invention will be further described below with reference to specific embodiments.

[0044] However, the description of this utility model is only a structural or even functional description of the embodiments, and the scope of the present utility model is not limited by the embodiments described herein.

[0045] For example, multiple embodiments may have various modifications and forms, and it should be understood that the scope of this utility model includes equivalents that can realize the technical concept.

[0046] like Figures 1-6 As shown, this embodiment is achieved through the following technical solution: it includes a flexible shaft retractor 1 and a brain repression plate 2; the flexible shaft retractor 1 includes, from front to back, a plate clamp assembly 11, a flexible shaft body 12 and a fixing seat 13; the plate clamp assembly 11 is used to clamp the matching brain repression plate 2, and the fixing seat 13 is used to connect the surgical head frame or other instruments.

[0047] The clamping assembly 11 includes a fixing rod 111, an outer sleeve 112, a spring 113, a steel ball 114, and an end cap 115. The end cap 115 is fixedly connected to one end of the outer sleeve 112, and the outer sleeve 112 and the end cap 115 are laser-welded at the contact position. The fixing rod 111 passes through the end cap 115 and the outer sleeve 112. The spring 113 is sleeved on the fixing rod 111 and clamped between the cylindrical boss 1113 of the outer sleeve 112 and the fixing rod. A through hole 1114 is machined along the central axis of the fixing rod 111, and a tapered hole 1111 for holding the steel ball 114 is provided on the side wall of the fixing rod 111.

[0048] The brain pressure plate 2 includes a round handle 21 and a pressure plate 22, which are fixedly connected. The round handle 21 is provided with a ball socket 213, which is the same size as the steel ball 114. The ball socket 213 and the steel ball 114 cooperate to lock the brain pressure plate 2.

[0049] In this embodiment, on one end face of the fixing rod 111, an arc-shaped notch 1112 is provided at the same circumferential position as the tapered hole 1111. The function of the arc-shaped notch 1112 is that when the brain pressure plate 2 is inserted into the through hole 1114 of the flexible shaft retractor fixing rod, the circumferential position of the ball socket 213 on the round handle is aligned with the arc-shaped notch 1112, facilitating the steel ball 114 to fall into the ball socket 213 for locking. The end cap 115 has a tapered hole 1151 on its central axis. When the outer sleeve 112 and the end cap 115 slide together toward the spring 113, they serve to press down the steel ball 114. One end of the round handle 21 has a square groove 214. After the pressure plate 22 is inserted into the square groove 214, it is laser welded to the round handle 21. The other end of the round handle 21 has an inclined surface 211, and a round groove 212 is provided on the circumferential side of the round handle 21, connecting the inclined surface 211 and the ball socket 213. After the brain pressure plate 2 is locked in place with the flexible shaft retractor 1, the brain pressure plate 2 is parallel to the flexible shaft retractor 1.

[0050] The pressure plate 22 is softened, allowing doctors to plastically bend it to the desired shape before applying pressure to brain tissue. The surface of the pressure plate 22 is coated with an elastic resin coating, preventing scratches to the brain tissue and protecting it. The brain pressure plate 22 is available in five sizes, distinguished by its width: 6mm, 7.5mm, 10mm, 12.5mm, and 15mm. Operators can select the appropriate size based on actual clinical needs.

[0051] The method of using this utility model is as follows:

[0052] The circular groove 212 on the handle of the brain pressure plate is roughly aligned with the arc-shaped notch 1112 of the fixing rod 111 of the flexible shaft retractor. The handle 21 is inserted into the through hole 1114 of the fixing rod, while the outer sleeve 112 is pulled towards the brain pressure plate 2. The steel ball 114 rises along the inclined surface 211 of the handle and then enters the circular groove 212 of the handle. When the handle 21 can no longer be inserted into the through hole, the outer sleeve 112 is released. The outer sleeve 112 automatically springs back under the action of the spring 113, and the steel ball 114 is pressed into the ball socket 213 of the handle of the brain pressure plate under the action of the tapered hole 1151 of the end cap, thus completing the locking and fixing of the flexible shaft retractor 1 to the brain pressure plate 2. The action of releasing the brain pressure plate 2 is the reverse of the above operation.

[0053] Of course, the above description is only a preferred embodiment of this utility model and should not be considered as limiting the scope of the embodiments of this utility model. This utility model is not limited to the above examples, and all equivalent changes and improvements made by those skilled in the art within the scope of this utility model should be included in the patent coverage of this utility model.

Claims

1. A one-click locking flexible shaft retractor and a matching brain pressure plate, characterized in that, It includes a flexible shaft retractor (1) and a brain pressure plate (2); the flexible shaft retractor (1) includes, from front to back, a plate clamp assembly (11), a flexible shaft body (12) and a fixing seat (13); The clamping assembly (11) includes a fixing rod (111), an outer sleeve (112), a spring (113), a steel ball (114), and an end cap (115); the end cap (115) is fixedly connected to one end of the outer sleeve (112), the fixing rod (111) passes through the end cap (115) and the outer sleeve (112), the spring (113) is sleeved on the fixing rod (111) and clamped between the cylindrical boss (1113) of the outer sleeve (112) and the fixing rod; a through hole (1114) is machined along the central axis of the fixing rod (111), and a tapered hole (1111) for holding the steel ball (114) is provided on the side wall of the fixing rod (111); The brain pressure plate (2) includes a round handle (21) and a pressure plate (22), which are fixedly connected; the round handle (21) is provided with a ball socket (213), the size of which is the same as that of the steel ball (114).

2. The one-key locking flexible shaft retractor and matching brain pressure plate according to claim 1, characterized in that, On one end face of the fixing rod (111), there is an arc-shaped notch (1112) at the same circumferential position as the tapered hole (1111).

3. The one-click locking flexible shaft retractor and matching brain pressure plate according to claim 1, characterized in that, The end cap (115) has a tapered hole (1151) along its central axis.

4. The one-key locking flexible shaft retractor and matching brain pressure plate according to claim 1, characterized in that, The round handle (21) has a square groove (214) at one end. After the pressure plate (22) is inserted into the square groove (214), it is laser welded to the round handle (21). The other end of the round handle (21) is provided with a bevel (211). The circumferential side of the round handle (21) is provided with a round groove (212). The round groove (212) connects the bevel (211) and the ball socket (213).

5. The one-key locking flexible shaft retractor and matching brain pressure plate according to claim 1, characterized in that, After the brain pressure plate (2) is locked in place with the flexible shaft retractor (1), the brain pressure plate (2) is parallel to the flexible shaft retractor (1).

6. The one-key locking flexible shaft retractor and matching brain pressure plate according to claim 4, characterized in that, The pressure plate (22) is softened.

7. The one-key locking flexible shaft retractor and matching brain pressure plate according to claim 6, characterized in that, The surface of the pressure plate (22) is coated with an elastic resin coating.

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