An easy-to-use scalp retraction device for craniotomy

Abstract

This utility model discloses an easy-to-operate scalp retraction device for craniotomy, comprising: a handle, gears rotatably mounted on both sides of the handle, connecting arms fixedly mounted on one end of the outer surface of the two sets of gears, and scalp retraction claws fixedly mounted on one end of the inner side of each of the two sets of connecting arms. A pushing mechanism is slidably mounted between the two sets of gears and meshes with each other, so that the pushing mechanism can mesh and drive the two sets of gears to rotate synchronously outward during the forward pushing process between the two sets of gears, thereby enabling the gears to drive the scalp retraction claws on the inner side of the connecting arms to rotate and open outward. Through the design of the pushing mechanism, this application allows for scalp retraction and repositioning only by holding the outer surface of the handle to push the pushing plate and press the pushing ring. This single-handed operation design is very practical in the surgical environment, reducing the learning cost and operational difficulty for medical staff.

Description

Technical Field

[0001] This utility model relates to the field of scalp traction device technology, specifically a scalp traction device for easy-to-operate craniotomy surgery. Background Technology

[0002] A scalp traction device is a tool specifically designed for craniotomy to effectively separate and pull the scalp during the procedure. Its function is to pull the scalp away from the skull, providing a clear view for the surgeon to perform the operation while avoiding damage to the skin and soft tissues. Craniotomy typically requires exposing the scalp for craniotomy, and the traction device plays a crucial role in this process.

[0003] For example, the national authorized patent announcement number CN216257267U discloses a novel skin traction device with traction scale, including a housing, support mechanisms on both sides of the housing, and a traction mechanism on the inner side of the housing. The traction mechanism is connected to an adjustment mechanism located on the inner side of the housing. Both the adjustment mechanism and the support mechanism are connected to a drive mechanism located on the housing. This utility model, by setting an adjustment mechanism, can adjust the distance between the two traction mechanisms, thereby effectively solving the problem that the existing skin traction closure device cannot be adjusted according to the actual size of the wound during use. By setting a traction mechanism, the connecting block is moved by a telescopic rod. During the movement of the connecting block, the pressure block pushes the insertion pins out. When the connecting block continues to move, more insertion pins will be extended, so that the device can be used for traction of wounds of different sizes.

[0004] However, the aforementioned new skin tensioner with tension scale has an adjustment mechanism that is not intuitive and is cumbersome to operate, which may cause inconvenience to medical staff in emergency situations. Consequently, it does not have the function of convenient operation and holding during the skin tensioning process in surgery. Utility Model Content

[0005] The purpose of this invention is to provide an easy-to-operate scalp traction device for craniotomy, in order to solve the problem mentioned in the background art that it is not convenient to operate and hold during the skin traction process.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A scalp retraction device for easy-to-operate craniotomy includes: a handle, on both sides of which gears are rotatably mounted; a connecting arm is fixedly mounted on one end of the outer surface of each of the two sets of gears; a scalp retraction claw is fixedly mounted on one end of the inner side of each of the two sets of connecting arms; and a pushing mechanism is slidably mounted between the two sets of gears and meshes with each other, so that the pushing mechanism can mesh and drive the two sets of gears to rotate synchronously outward during the forward pushing process between the two sets of gears, thereby enabling the gears to drive the scalp retraction claws on the inner side of the connecting arm to rotate and open outward.

[0008] Preferably, the pushing mechanism includes a toothed plate that slides between two sets of gears and meshes with them. A pushing plate is fixedly installed on the upper surface of the toothed plate and slides out from the handle to the upper surface.

[0009] Preferably, a sliding column is fixedly installed at one end of the toothed plate, the sliding column is slidably installed inside the connecting cylinder, the connecting cylinder is fixedly installed at one end inside the handle, and a first spring is provided inside the connecting cylinder, with the two ends of the first spring respectively fixedly connected to one end inside the connecting cylinder and one end of the sliding column.

[0010] Preferably, the lower end of the handle has an embedded groove, and a first helical tooth is slidably installed in the embedded groove. The first helical tooth is fixedly installed on the lower surface of the tooth plate. The first helical tooth can mesh with a second helical tooth. The second helical tooth slides vertically in a guide groove. The guide groove is opened on the lower surface of the handle and is connected to the embedded groove.

[0011] Preferably, limit plates are fixedly installed on both sides of the second helical tooth. The limit plates slide in the limit groove. The limit groove is opened at both ends of the guide groove. A second spring is provided in the limit groove. The two ends of the second spring are fixedly connected between the lower surface of the limit groove and the lower surface of the limit plate, respectively.

[0012] Preferably, a push ring is rotatably mounted inside the second helical tooth, and the other end of the push ring slides out from inside the handle to the lower surface.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Through the design of the handle, connecting arm, scalp retraction claw, gears, and pushing mechanism, when the patient's scalp is pulled away from the skull during surgery, the operator can hold the handle and place the scalp retraction claw on the inner side of the connecting arm between the incisions in the scalp. Then, the operator can push the pushing mechanism at the upper end of the handle to engage two sets of gears, which rotate synchronously outwards. This causes the gears to drive the two sets of scalp retraction claws on the inner side of the connecting arm to rotate and open outwards, thus achieving the retraction of the patient's scalp. Furthermore, the diameter of the opening as the connecting arm is pushed and rotated is controlled by the distance pushed by the pushing mechanism, allowing medical personnel to adjust the procedure according to the specific needs of the surgery. The system precisely adjusts the degree of scalp traction based on factors such as the size of the surgical field and the required operating space. The connecting arm is locked by a pushing mechanism after being pushed out to a certain angle, ensuring it remains extended and maintaining scalp traction. This locking function helps medical staff perform the surgery smoothly. Once the appropriate traction is achieved and locked, medical staff can concentrate on the surgery without worrying about changes in scalp traction, thus improving surgical efficiency. After the surgery, pressing the pushing mechanism at the lower end of the handle releases the locking of the connecting arm, allowing staff to pull back the pushing mechanism to reposition the scalp.

[0015] 2. Through the design of the push plate, toothed plate, first helical tooth, second helical tooth, push ring and second spring, when the patient's scalp is stretched, the push plate can be pushed to drive the toothed plate to slide forward between the two sets of gears, so that the toothed plate can mesh and drive the two sets of gears to rotate outward synchronously. In turn, the gears can drive the scalp stretching claws on the inner side of the two sets of connecting arms to rotate outward and open, thus realizing the stretching of the patient's scalp. In addition, during the forward sliding process, the toothed plate will also drive the sliding column to slide forward in the connecting cylinder, so that the sliding column can pull the first spring in the connecting cylinder, and the first spring can apply a pulling force to the toothed plate.

[0016] Furthermore, as the toothed plate slides forward, it also causes the first helical tooth on its lower surface to press against the inclined sliding surface of the second helical tooth. This allows the second helical tooth to slide vertically down through the limiting plates on both sides within the limiting groove. This allows the toothed plate to move forward a certain distance, while simultaneously causing the limiting plates to press against one end of the second spring within the limiting groove. The second spring then applies a lifting force back to the limiting plate, causing the limiting plate to lift the second helical tooth and re-engage it with the first helical tooth. The first helical tooth, having moved forward a certain distance, is then pressed against one end of the second helical tooth by the pulling force applied by the first spring, preventing the toothed plate from retracting. This ensures the connecting arm remains in an extended state, maintaining traction on the scalp and helping to reduce the risks that may arise during surgery due to changes in the scalp's traction state, such as affecting the surrounding area. Unexpected traction of tissues or impact on the surgical field of vision, etc. After the operation, the push ring at the lower end of the handle can be pressed to push the second helical tooth down in the guide groove through rotational force, thereby driving the second helical tooth to disengage from the engagement with the first helical tooth, thus releasing the lock on the first helical tooth. The tooth plate can be pulled into position by the traction of the first spring, thereby enabling the tooth plate to engage the two sets of connecting arms to drive the scalp traction claw to reset and close. This operation is relatively simple and can be easily completed by medical staff, reducing the complexity and time required for postoperative operations. Moreover, this integrated design makes the device more compact during operation. Medical staff do not need to use multiple scattered tools or perform complex external operations to achieve scalp traction and reset, improving the convenience and efficiency of operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the connecting arm of this utility model being pushed out;

[0019] Figure 3 This is a schematic diagram of the meshing structure of the toothed plate and gear of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the second helical tooth and the first helical tooth of this utility model engaging.

[0021] Figure 5 This is a schematic diagram of the push ring structure of this utility model.

[0022] In the diagram: 1. Handle; 101. Connecting arm; 102. Scalp tensioning claw; 103. Gear; 104. Connecting cylinder; 105. First spring; 106. Embedded groove; 107. Guide groove; 108. Limiting groove; 2. Pushing mechanism; 201. Pushing plate; 202. Toothed plate; 203. Sliding column; 204. First helical tooth; 205. Second helical tooth; 206. Pushing ring; 207. Second spring; 208. Limiting plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 This embodiment provides the following technical solution:

[0025] like Figures 1-3 As shown, an easy-to-operate scalp traction device for craniotomy surgery is used for scalp traction during craniotomy. It includes: a handle 1, with gears 103 rotatably mounted on both sides of the handle 1; a connecting arm 101 is fixedly mounted on one end of the outer surface of the two sets of gears 103; a scalp traction claw 102 is fixedly mounted on one end of the inner side of the two sets of connecting arms 101; and a pushing mechanism 2 is slidably mounted between the two sets of gears 103 and meshes with each other. This allows the pushing mechanism 2 to mesh and drive the two sets of gears 103 to rotate synchronously outward during the forward pushing process between the two sets of gears 103, thereby enabling the gears 103 to drive the scalp traction claws 102 on the inner side of the connecting arms 101 to rotate and open outward.

[0026] Through the design of the handle 1, connecting arm 101, scalp retraction claw 102, gear 103, and pushing mechanism 2, when the scalp is pulled away from the skull during surgery, the operator can hold the handle 1 and place the scalp retraction claw 102 on the inner side of the connecting arm 101 between the incisions in the scalp. Then, the operator can push the pushing mechanism 2 at the upper end of the handle 1 to engage the two sets of gears 103, which rotate synchronously outwards. This allows the gears 103 to drive the scalp retraction claws 102 on the inner side of the two sets of connecting arms 101 to rotate and open outwards, thus achieving the retraction of the patient's scalp. Furthermore, the diameter of the opening of the connecting arm 101 as it is pushed and rotated is controlled by the distance pushed by the pushing mechanism 2, allowing medical personnel to... The scalp tension can be precisely adjusted according to the specific needs of the surgery, such as the size of the surgical field and the requirements of the operating space. After the connecting arm 101 is pushed and unfolded to a certain angle, it is locked by the pushing mechanism 2 to ensure that the connecting arm 101 is in the unfolded state and to maintain the tension on the scalp. This locking function helps medical staff to perform the surgical operation smoothly. Once the appropriate tension is reached and locked, the medical staff can concentrate on the surgical operation without worrying about changes in the tension of the scalp, thereby improving the efficiency of the operation. After the operation is completed, the locking of the connecting arm 101 can be released by pressing the pushing mechanism 2 at the lower end of the handle 1, and the staff can pull back the pushing mechanism 2 to reset the scalp.

[0027] like Figures 4-5 As shown, the pushing mechanism 2 includes a toothed plate 202, which slides between two sets of gears 103 and meshes with the two sets of gears 103. A pushing plate 201 is fixedly installed on the upper surface of the toothed plate 202, and the pushing plate 201 slides out from the handle 1 to the upper surface.

[0028] A sliding column 203 is fixedly installed at one end of the toothed plate 202. The sliding column 203 is slidably installed inside the connecting cylinder 104. The connecting cylinder 104 is fixedly installed at one end inside the handle 1. A first spring 105 is provided inside the connecting cylinder 104. The two ends of the first spring 105 are respectively fixedly connected to one end inside the connecting cylinder 104 and one end of the sliding column 203.

[0029] The lower end of the handle 1 has an inner groove 106, and a first helical tooth 204 is slidably installed in the inner groove 106. The first helical tooth 204 is fixedly installed on the lower surface of the tooth plate 202. The first helical tooth 204 can mesh with a second helical tooth 205. The second helical tooth 205 slides vertically in the guide groove 107. The guide groove 107 is opened on the lower surface of the handle 1 and is connected to the inner groove 106.

[0030] Limiting plates 208 are fixedly installed on both sides of the second helical tooth 205. The limiting plates 208 slide in the limiting groove 108. The limiting groove 108 is opened at both ends in the guide groove 107. A second spring 207 is provided in the limiting groove 108. The two ends of the second spring 207 are fixedly connected between the lower surface of the limiting groove 108 and the lower surface of the limiting plate 208, respectively.

[0031] A push ring 206 is rotatably mounted inside the second helical tooth 205, and the other end of the push ring 206 slides out from the handle 1 to the lower surface.

[0032] Through the design of the push plate 201, toothed plate 202, first helical tooth 204, second helical tooth 205, push ring 206 and second spring 207, when the patient's scalp is stretched, the push plate 201 can be pushed to drive the toothed plate 202 to slide forward between the two sets of gears 103, thereby enabling the toothed plate 202 to mesh with and drive the two sets of gears 103 to rotate outward synchronously. This allows the gears 103 to drive the scalp stretching claws 102 on the inner side of the two sets of connecting arms 101 to rotate outward and open, thus achieving the stretching of the patient's scalp. During the forward sliding process, the toothed plate 202 will also drive the sliding column 203 to slide forward in the connecting cylinder 104, thereby enabling the sliding column 203 to pull the first spring 105 in the connecting cylinder 104, and enabling the first spring 105 to apply a pulling force to the toothed plate 202.

[0033] Furthermore, as the toothed plate 202 slides forward, it also causes the first helical tooth 204 on its lower surface to press against the inclined sliding surface of the second helical tooth 205. This allows the second helical tooth 205 to be driven to slide vertically down through the limiting plates 208 on both sides within the limiting groove 108. This allows the toothed plate 202 to move forward a certain distance, while simultaneously causing the limiting plate 208 to press against one end of the second spring 207 within the limiting groove 108. The second spring 207 then applies a lifting force back to the limiting plate 208, causing the limiting plate 208 to lift the second helical tooth 205 and re-engage it with the first helical tooth 204. The first helical tooth 204, having moved forward a certain distance, is then pressed against one end of the second helical tooth 205 by the pulling force applied by the first spring 105, preventing the toothed plate 202 from retracting. This ensures that the connecting arm 101 remains in an extended position, maintaining traction on the scalp and helping to reduce the impact of changes in scalp traction during surgery. The procedure avoids potential risks, such as accidental traction on surrounding tissues or impact on the surgical field. After the surgery, pressing the push ring 206 at the lower end of the handle 1 will use rotational force to push the second helical tooth 205 down into the guide groove 107, thereby disengaging the second helical tooth 205 from the first helical tooth 204 and releasing the lock on the first helical tooth 204. This allows the toothed plate 202 to be pulled into position by the pull of the first spring 105, which in turn allows the toothed plate 202 to engage with the two sets of connecting arms 101 to drive the scalp traction claw 102 to reset and close. This operation is relatively simple and can be easily completed by medical staff, reducing the complexity and time required for postoperative operations. Moreover, this integrated design makes the device more compact during operation, eliminating the need for medical staff to use multiple separate tools or perform complex external operations to achieve scalp traction and reset, thus improving the convenience and efficiency of the operation.

[0034] Based on the above technical solution, the working steps of this solution are summarized as follows: During craniotomy, when the patient's scalp is pulled away from the skull, the operator can hold the handle 1 and place the scalp retraction claw 102 on the inner side of the connecting arm 101 between the cuts in the scalp. Then, the operator can push the push plate 201 at the upper end of the handle 1, causing the toothed plate 202 to slide forward between the two sets of gears 103. This allows the toothed plate 202 to mesh and drive the two sets of gears 103 to rotate synchronously outward, thereby enabling the gears 103 to drive the scalp retraction claw 102 on the inner side of the two connecting arms 101. The skin traction claw 102 rotates outward to open, thus stretching the patient's scalp. As the toothed plate 202 slides forward, it also drives the sliding column 203 to slide forward within the connecting cylinder 104. This causes the sliding column 203 to pull the first spring 105 within the connecting cylinder 104, applying a pulling force to the toothed plate 202. Simultaneously, the toothed plate 202, while sliding forward, also causes the first helical tooth 204 on its lower surface to press against the inclined sliding surface of the second helical tooth 205, allowing the second helical tooth 205 to be moved through both sides. The limiting plate 208 slides vertically down within the limiting groove 108, allowing the toothed plate 202 to move forward a certain distance. Simultaneously, the limiting plate 208 presses against one end of the second spring 207 within the limiting groove 108. The second spring 207 then applies a lifting force back to the limiting plate 208, causing the limiting plate 208 to lift the second helical tooth 205 and re-engage with the first helical tooth 204. Meanwhile, the first helical tooth 204, having moved forward a certain distance, is pressed against one end of the second helical tooth 205 by the pulling force applied by the first spring 105, preventing the toothed plate 202 from moving forward. The retraction of the connecting arm 101 ensures that it remains in an extended position to maintain traction on the scalp. After the surgery, the push ring 206 at the lower end of the handle 1 can be pressed to push the second oblique tooth 205 down in the guide groove 107 through rotational force. This will cause the second oblique tooth 205 to disengage from the first oblique tooth 204, thereby releasing the lock on the first oblique tooth 204. The tooth plate 202 can then be pulled to a position by the pull of the first spring 105, which will allow the tooth plate 202 to engage with the two sets of connecting arms 101 to drive the scalp traction claw 102 to reset and close.

[0035] In summary, the device allows for scalp traction and repositioning by simply holding the outer surface of the handle 1 to push the push plate 201 and press the push ring 206. This single-handed operation design is very practical in the surgical environment, reducing the learning cost and operational difficulty for medical staff. New medical staff can quickly master the use of this traction device, and it can also be used quickly in emergency surgical situations, reducing waiting time for patients.

[0036] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A user-friendly scalp retraction device for craniotomy, characterized in that, include: The handle (1) has gears (103) rotatably mounted on both sides of the handle (1). A connecting arm (101) is fixedly mounted on one end of the outer surface of the two sets of gears (103). A scalp tensioning claw (102) is fixedly mounted on one end of the inner side of the two sets of connecting arms (101). A pushing mechanism (2) is slidably mounted between the two sets of gears (103) and meshes with each other. This allows the pushing mechanism (2) to mesh and drive the two sets of gears (103) to rotate outward synchronously during the forward pushing process between the two sets of gears (103). This enables the gears (103) to drive the scalp tensioning claw (102) on the inner side of the connecting arm (101) to rotate outward and open.

2. The easily operable scalp retraction device for craniotomy according to claim 1, characterized in that: The pushing mechanism (2) includes a toothed plate (202), which slides between two sets of gears (103) and meshes with the two sets of gears (103). A pushing plate (201) is fixedly installed on the upper surface of the toothed plate (202), and the pushing plate (201) slides out from the handle (1) to the upper surface.

3. The easily operable scalp retraction device for craniotomy according to claim 2, characterized in that: A sliding column (203) is fixedly installed at one end of the toothed plate (202). The sliding column (203) is slidably installed inside the connecting cylinder (104). The connecting cylinder (104) is fixedly installed at one end inside the handle (1). A first spring (105) is provided inside the connecting cylinder (104). The two ends of the first spring (105) are respectively fixedly connected to one end inside the connecting cylinder (104) and one end of the sliding column (203).

4. The easily operable scalp retraction device for craniotomy according to claim 3, characterized in that: The handle (1) has an inner groove (106) at its lower end. A first helical tooth (204) is slidably installed in the inner groove (106). The first helical tooth (204) is fixedly installed on the lower surface of the tooth plate (202). The first helical tooth (204) can mesh with a second helical tooth (205). The second helical tooth (205) slides vertically in a guide groove (107). The guide groove (107) is located on the lower surface of the handle (1) and is connected to the inner groove (106).

5. The easily operable scalp retraction device for craniotomy according to claim 4, characterized in that: Limiting plates (208) are fixedly installed on both sides of the second helical tooth (205). The limiting plates (208) slide in the limiting groove (108). The limiting groove (108) is opened at both ends in the guide groove (107). A second spring (207) is provided in the limiting groove (108). The two ends of the second spring (207) are fixedly connected between the lower surface of the limiting groove (108) and the lower surface of the limiting plate (208).

6. The easily operable scalp retraction device for craniotomy according to claim 5, characterized in that: A push ring (206) is rotatably mounted inside the second helical tooth (205), and the other end of the push ring (206) slides out from the handle (1) to the lower surface.

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