Safety plate holding forceps for posterior cervical approach

Abstract

The utility model discloses a safety plate holding clamp for a posterior cervical approach, which comprises a baffle plate and two clamp arms hinged together, each clamp arm comprises a clamp body and a clamp head, and the baffle plate is connected to the clamp head of one clamp arm and is transversely arranged relative to the clamp head. The transverse baffle is arranged at the front end of the plate holding forceps, so that the catastrophic consequence that the front end of the forceps rushes out forwards and slides towards the spinal canal when the forceps are accidentally loosened, and consequently spinal cord injury is caused is prevented, the safety of the operation process of placing the supporting plate is improved, and the risk of spinal cord injury caused by the operation process is reduced or avoided.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a pair of safety posterior cervical plate-holding pliers. Background Art

[0002] Posterior cervical single-open-door laminoplasty is one of the most commonly used surgical methods for the treatment of cervical spondylotic myelopathy. At present, the most common way to maintain the single-open-door state of the cervical vertebral lamina is to use the open-door side support plate to support the lamina to maintain the open-door state of the lamina, so as to achieve a long-lasting and stable spinal cord decompression state. During the operation, after the lamina is opened, the support plate needs to be placed at the opening with a plate holding tool, and then a hand awl or electric drill is used to drill holes in the lamina or lateral mass, and screws are screwed to properly fix the support plate to the position of the opening.

[0003] At present, most of the board holding tools provided by various manufacturers for supporting boards are of tweezers structure, but tweezers are laborious levers and it is difficult to hold the supporting board firmly when using them. In order to make up for this shortcoming, many doctors use hemostatic forceps commonly used in surgical operations to hold the supporting board, or some manufacturers have designed board holding forceps similar to hemostatic forceps. However, if the existing hemostatic forceps or special board holding forceps designed by the manufacturer are accidentally disengaged during the process of holding the board to place the supporting board, the tip of the forceps will accidentally rush forward and slide into the spinal canal, which may lead to catastrophic consequences of spinal cord injury.

[0004] In addition, the existing hemostatic forceps or the special plate holding forceps designed by the manufacturer do not have a dedicated slot designed for holding the support plate, which makes it difficult to effectively fix the support plate in place when holding the plate; or the slot position is unreasonable, resulting in the handle of the plate holding forceps being blocked by the narrow incision when placing the support plate, and unable to be placed in the appropriate position of the vertebral plate opening. Third, the shape and structure of the existing hemostatic forceps or the special plate holding forceps designed by the manufacturer result in the handle part blocking the operation of drilling and screwing after holding and fixing the support plate. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a posterior cervical safety plate holding pliers, which can avoid the catastrophic consequence of spinal cord injury caused by accidental slipping of the hands and increase safety.

[0006] In order to achieve the above object, the utility model is realized by the following technical solutions:

[0007] The utility model relates to a posterior cervical safety plate holding pliers, comprising a baffle and two pliers arms hinged together, wherein the pliers arms comprise a pliers body and a pliers head, and the baffle is connected to the pliers head of one of the pliers arms and is arranged transversely relative to the pliers head.

[0008] Furthermore, the clamp heads of the two clamp arms are formed by bending to form a clamping section, a connecting section and a main body section, the clamp heads of the two clamp arms are formed by bending to form a clamping section, a connecting section and a main body section, the clamping section, the connecting section and the main body section are connected in sequence, the clamping sections of the two clamp arms are convex to the right relative to the main body section, the two clamp arms are respectively a left clamp arm and a right clamp arm, and the baffle is connected to the clamping section of the left clamp arm or the clamping section of the right clamp arm and extends to the left.

[0009] Furthermore, the left side of the clamp head of the left clamp arm and the right side of the clamp head of the right clamp arm form an occlusal surface, and the left side of the clamp section of the clamp head of the left clamp arm and the right side of the clamp section of the clamp head of the right clamp arm are provided with relative slots, the slots match the support plate, and the baffle is located behind the slot on the clamp section of the left clamp arm or behind the slot on the clamp section of the right clamp arm.

[0010] Furthermore, the left clamp arm and the right clamp arm are located on the same side of the baffle.

[0011] Furthermore, a finger ring for manipulation is provided at the rear end of the clamp body of the left clamp arm, and a finger ring for manipulation is provided at the left side of the rear end of the clamp body of the right clamp arm.

[0012] Furthermore, the clamp body of the left clamp arm and the clamp body of the right clamp arm are both provided with mutually matching locking teeth at the inner side, and the locking teeth on the two clamp arms are matched with each other.

[0013] The utility model has the following beneficial effects:

[0014] A transverse baffle (perpendicular to the extension direction of the clamp head) is provided at the front end of the plate holding forceps to prevent the front end of the forceps from rushing forward and sliding into the vertebral canal when the forceps are accidentally loosened, causing catastrophic consequences of spinal cord injury. This improves the safety of the surgical process of placing the support plate and reduces or avoids the risk of spinal cord injury caused by this operation.

[0015] The plate holding pliers can be operated with the right hand or the left hand. For right-handed operators, the plate holding pliers are bent so that the front end of the pliers head convexes to the right relative to the pliers body. At the same time, the finger ring of the right pliers arm is arranged on the left side. In this way, after the support plate is fixed with the plate holding pliers, the finger ring will not block the operation of drilling holes and tightening screws with a hand awl or an electric drill on the right side of the plate holding pliers, thereby improving the stability and safety of this operation process.

[0016] The front end of the plate holding pliers is designed with a slot suitable for the support plate, which helps to maintain the stability of the direction and position of the plate holding pliers and prevent the pliers from being blocked by the narrow incision space and unable to put the support plate in the right position. By bending the pliers head, the slot position is offset to the right relative to the pliers body (for right-handed operation), which has a better field of view, so that the support plate can be smoothly placed in the narrow incision. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 1 is a top view of a posterior cervical safety plate holding forceps according to an embodiment of the utility model;

[0018] Figure 2 yes Figure 1 A top view of the posterior cervical safety clamp in the open state. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0021] The plate holding forceps can be operated with the right hand or the left hand. This embodiment uses the right hand as an example to explain the posterior cervical safety plate holding forceps.

[0022] like Figure 1 to Figure 2 As shown, a posterior cervical plate holding forceps safety device comprises a baffle plate 1 and two hinged forceps arms, wherein the forceps arms comprise a forceps body 2 (i.e., a handle) and a forceps head 3, and the baffle plate 1 is connected to the forceps head 3 of one of the forceps arms and is disposed transversely relative to the forceps head 3 to increase the transverse dimension of the front end of the plate holding forceps. When the plate holding forceps is accidentally released, the baffle plate 1 prevents the front end of the plate holding forceps from sliding toward the spinal canal to cause spinal cord injury, thereby improving the safety of the surgical process of placing the support plate.

[0023] The two clamp arms are respectively a left clamp arm 4 and a right clamp arm 5, and the clamp head 3 of the left clamp arm 4 and the clamp head 3 of the right clamp arm 5 form an occlusal surface. The clamp head 3 of the left clamp arm 4 and the clamp head 3 of the right clamp arm 5 are both bent to form a clamping section 6, a connecting section 7 and a main section 8, and the clamping section 6, the connecting section 7 and the main section 8 are connected in sequence. The clamping sections of the two clamp arms are convex to the right relative to the main section (convex to the left for medical personnel operating with their left hands), that is, the clamping section 6 is located on the right side in front of the main section 8 (for medical personnel operating with their left hands, the clamping section 6 is located on the left side in front of the main section 8), forming a "Z" shape as shown in the figure, and the baffle 1 is connected to the clamping section 6 of the left clamp arm 4 or the clamping section 6 of the right clamp arm 5 and extends to the left. The front ends of the two forceps arms are arranged in a "Z" shape, and the clamping section 6 is located on the right side in front of the main section 8, so that the baffle 1 is accommodated in the concave position between the clamping section 6 and the connecting section 7, so that the baffle 1 does not protrude to the left abruptly, so as to prevent the baffle 1 from pulling tissues, blood vessels, etc. during surgery. The front ends of the two forceps arms are arranged in a "Z" shape, and combined with the baffle 1, the overall lateral size of the front end of the plate holding forceps is increased, so as to prevent the plate holding forceps from sliding into the spinal canal and causing spinal cord injury when accidentally slipping out of the hand.

[0024] The left side of the pliers head 3 of the left pliers arm 4 and the right side of the pliers head 3 of the right pliers arm 5 form an occlusal surface, and the left side of the clamping section 6 of the pliers head 3 of the left pliers arm 4 and the right side of the clamping section 6 of the pliers head 3 of the right pliers arm 5 are provided with opposite card slots 9 matching the support plate (the number of card slots 9 of each pliers arm can be set to one or more), and the baffle plate 1 is located behind the card slot 9 on the clamping section 6 where it is located to avoid interference between the baffle plate 1 and the support plate. By bending the pliers head 3, the position of the card slot 9 is offset to the right relative to the pliers body 2, which has a better field of view, so that the support plate can be smoothly placed into a narrow incision.

[0025] The left clamp arm 4 and the right clamp arm 5 are located on the same side of the baffle 1. In this way, the left clamp arm 4 and the right clamp arm 5 do not interfere with the baffle, and there is no need to set a clearance structure (such as a groove or a hole) of the baffle 1 on the left clamp arm 4 and the right clamp arm 5, which is easy to manufacture. Figure 1 , the baffle 1 is located on the top surface of the left clamp arm 4, and when the left clamp arm 4 and the right clamp arm 5 are brought together, the baffle 1 extends to the top of the right clamp arm 5. In other embodiments, the baffle 1 can also be set on the bottom surface of the left clamp arm 4, and when the left clamp arm 4 and the right clamp arm 5 are brought together, the baffle 1 extends to the bottom of the right clamp arm 5. In other embodiments, the baffle is also connected to the top surface or bottom surface of (the clamping section 6 of) the right clamp arm 5.

[0026] The rear end of the clamp body 2 of the left clamp arm 4 is provided with a finger ring 10 for manipulation (in the figure, the finger ring is provided on the left side of the rear end of the clamp body 2 of the left clamp arm 4, and in other embodiments, it may also be provided on the right side of the rear end of the clamp body 2 of the left clamp arm 4), and the left side of the rear end of the clamp body 2 of the right clamp arm 5 is provided with a finger ring 10 for manipulation. The finger ring 10 of the right clamp arm 5 of the plate holding pliers is provided on the left side (that is, the inner side) of the rear end of the clamp body 2 to prevent the finger ring 10 of the right clamp arm 5 from blocking the operation of drilling holes and screwing screws with a hand awl or an electric drill on the right side of the plate holding pliers (for right-handed surgeons, when using the safety plate holding pliers, the right hand operates the plate holding pliers, and the left side of the plate holding pliers is blocked by the wrist of the medical staff, and the electric drill or hand drill is used to drill holes at the right side of the right hand; for left-handed doctors, when using the safety plate holding pliers, the left hand operates the safety plate holding pliers, and the electric drill or hand drill is used to drill holes at the left side of the left hand). In addition, the clamping section 6 is biased to the right relative to the main body section 8, the plate holding pliers form a "Z"-shaped front end, and the clamp body 2 of the plate holding pliers is to the left relative to the clamp head 3, so it can better avoid the drill bit.

[0027] The safety plate holding pliers of this embodiment also include two latching teeth 11, which are respectively arranged on the inner side of the pliers body 2 of the left pliers arm 4 and the pliers body 2 of the right pliers arm 5. The two latching teeth 11 cooperate with each other to control the clamping degree of the occlusal surface according to surgical needs.

[0028] As described above, the embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. These modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model. Therefore, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the protection scope of the utility model.

Claims

1. A posterior cervical safety plate holding forceps, characterized in that: It comprises a baffle plate and two pliers arms hinged together, the pliers arms comprise a pliers body and a pliers head, the baffle plate is connected to the pliers head of one of the pliers arms and is arranged transversely relative to the pliers head; The clamp heads of the two clamp arms are bent to form a clamping section, a connecting section and a main section, the clamping section, the connecting section and the main section are connected in sequence, the clamping sections of the two clamp arms are convex to the right relative to the main section, the two clamp arms are respectively a left clamp arm and a right clamp arm, the baffle is connected to the clamping section of the left clamp arm or the clamping section of the right clamp arm and extends to the left; The left side of the clamp head of the left clamp arm and the right side of the clamp head of the right clamp arm form an engaging surface, and the left side of the clamp section of the clamp head of the left clamp arm and the right side of the clamp section of the clamp head of the right clamp arm are provided with relative slots, which match the support plate, and the baffle is located behind the slot on the clamp section of the left clamp arm or behind the slot on the clamp section of the right clamp arm.

2. The posterior cervical safety plate holding forceps according to claim 1, characterized in that: The left clamp arm and the right clamp arm are located on the same side of the baffle.

3. The posterior cervical safety plate holding forceps according to claim 1 or 2, characterized in that: A finger ring for manipulation is arranged at the rear end of the clamp body of the left clamp arm, and a finger ring for manipulation is arranged at the left side of the rear end of the clamp body of the right clamp arm.

4. The posterior cervical safety plate holding forceps according to claim 1, 2 or 3, characterized in that: The clamp bodies of the left clamp arm and the right clamp arm are both provided with mutually matching locking teeth at the inner side, and the locking teeth on the two clamp arms are matched with each other.

Images