Clamp forceps for endoscope

Abstract

The utility model discloses a kind of clamping forceps for endoscope, including clamp assembly, open-close clamp sliding block, sleeve, handle, the spring hose of clamp assembly is fixedly connected through sleeve and handle, the clamp head open-close clamp steel wire of clamp assembly is built-in spring hose and open-close clamp sliding block fixedly connected;The open-close clamp sliding block is sleeved in handle;Unlock button A is installed on the surface of open-close clamp sliding block, the surface of handle is correspondingly provided with several backward inverted tooth, unlock button A is equipped with inclined block matched with inverted tooth, and for limiting open-close clamp sliding block forward movement;Unlock button A is opened, inclined block and inverted tooth are disengaged cooperation;Restore unlock button A, inclined block and inverted tooth are stopped by limiting.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an endoscope clamping forceps. Background Technology

[0002] In digestive endoscopy, endoscopic clamps are used, and with the help of external additional working channel traction technology, the diseased tissue is clamped and pulled during the digestive endoscopy procedure. This fully exposes the surgical field, reduces the difficulty of the operation, shortens the operation time, reduces the occurrence of complications such as intraoperative bleeding and perforation, improves the quality and efficiency of the operation, and reduces patient suffering.

[0003] The clamp head is secured with traction ropes on both sides. The other ends of the two traction ropes are fixed to the connecting sleeve and fitted onto the end of the digestive endoscope. The spring hose of the clamp assembly is connected to the handle. When the handle pushes the clamp head forward, the clamp head is resisted by the traction ropes, causing the spring hose to bend downwards, allowing the clamp head to swing down for easy tissue gripping. The guide tube is connected to the sleeve and connecting sleeve at both ends to establish a channel for the clamp assembly. The clamp head opening and closing clamp wire is fixed to the opening and closing clamp slider on the handle. The opening and closing clamp slider can open and close the clamp head by sliding back and forth. The opening and closing clamp wire is in the inner hole of the spring hose of the clamp assembly.

[0004] Currently, the locking of the clamp head in endoscopic clamps is controlled by a knob on the front of the clamp slider (such as the disposable gripping forceps from Olympus Medical Co., Ltd. of Japan). The drawback of this method is that: 1: Rotating the knob on the handle to move it forward or backward would require increasing the overall length of the handle, and if the overall length of the handle is too long, it will be inconvenient to operate; 2: Before opening the clamp, the knob needs to be rotated to loosen the locking mechanism; after closing the clamp, the knob also needs to be rotated to lock it. The operation is cumbersome and requires both hands to operate the opening and closing actions, which affects the efficiency of use. 3. The screw-type locking structure is prone to loosening after prolonged use, which affects its use.

[0005] Additionally, the spring hose of the clamp assembly is connected to the handle. Pushing the handle forward and pulling it back allows the clamp head of the clamp assembly to extend forward and retract backward. The unlocking button for the forward and backward movement of the clamp head is located on the sleeve, and the displacement of the clamp head is generally locked by squeezing the clamping spring hose. However, after prolonged use, it may loosen, and tissue tension may cause the clamp head to extend forward again, thereby lifting the tissue and exposing the surgical field.

[0006] To address this, we have designed a new type of endoscope clamp. Summary of the Invention

[0007] To achieve the above objectives, the technical solution of this utility model is as follows: an endoscope clamping forceps, comprising a clamping assembly, an opening and closing clamping slider, a sleeve, and a handle; the spring hose of the clamping assembly passes through the sleeve and is fixedly connected to the handle; the clamping head opening and closing clamping wire of the clamping assembly is built into the spring hose and fixedly connected to the opening and closing clamping slider; the opening and closing clamping slider is sleeved on the handle. The surface of the opening and closing clamp slider is equipped with an unlocking button A, and the surface of the handle is provided with several backward-facing reverse teeth. The unlocking button A is provided with a wedge block that cooperates with the reverse teeth and is used to limit the forward movement of the opening and closing clamp slider. When the unlocking button A is opened, the wedge block and the reverse teeth are disengaged. When the unlocking button A is restored, the wedge block and the reverse teeth press against the limit position.

[0008] Preferably, the unlock button A is mounted in the mounting groove on the surface of the opening and closing clamp slider by flipping the shaft end.

[0009] Preferably, the front end of the inclined block of the unlock button A is rounded; this facilitates disengagement.

[0010] Preferably, the unlock button A is a round shaft end and is equipped with a torsion spring that mates with the mounting groove of the opening and closing clamp slider.

[0011] Preferably, the pliers also include a locking structure for the forward and backward movement of the pliers head. This locking structure consists of several forward-facing reverse teeth on the front of the handle 4 and an unlocking button B on the sleeve. The unlocking button B has a wedge that engages with the reverse teeth to limit the forward movement of the handle. When the unlocking button B is opened, the wedge disengages from the reverse teeth. When the unlocking button B is closed, the wedge and reverse teeth engage at the limit position.

[0012] Preferably, the unlock button B is mounted in the mounting groove on the sleeve surface by flipping the shaft end.

[0013] Preferably, the front end of the inclined block of the unlock button B is rounded to facilitate disengagement.

[0014] Preferably, the unlock button B is a round shaft end and is equipped with a torsion spring that mates with the sleeve mounting groove.

[0015] Preferably, it also includes a guide tube, the two ends of which are respectively connected to the connecting sleeve of the sleeve and the clamp assembly to form a clamp assembly channel; the spring hose passes through the guide tube and the sleeve and is fixedly connected to the handle.

[0016] Preferably, the front ends of unlock button A and unlock button B are pressing parts, and the rear ends are reset by the elasticity of their own materials after being released.

[0017] The beneficial effects of this utility model are: 1. The overall length of the handle is shortened, eliminating the need for two-hand operation of the opening and closing clamp locking structure. It also eliminates the need to operate the locking structure before operating the opening and closing clamp slider, while extending the service life of the locking structure.

[0018] The opening and closing clamp unlock button is located on the opening and closing clamp slider. When opening the clamp, the finger clamps the unlock button and slides the opening and closing clamp slider forward to open the clamps. When closing the clamp, the finger pulls the slider back and releases the unlock button, and the unlocking mechanism closes (the reverse tooth structure does not affect the slider being pulled back). The clamp head can remain closed after clamping the tissue. In contrast, the existing knob unlock requires the unlocking mechanism to be released before opening the clamp and to be locked again after closing the clamp. The operation is cumbersome and requires both hands to operate the opening and closing clamps, which affects the efficiency of use.

[0019] 2: The locking structure of the forceps head is not easy to loosen, so that the forceps head retracts after clamping the tissue and will not extend forward due to tissue tension, thereby lifting the tissue and exposing the surgical field; The unlocking button for the forward and backward movement of the pliers head is located on the socket. When the pliers head needs to be extended forward, the thumb of the hand holding the socket presses the unlocking button, and the other hand can push the handle forward to extend the pliers head. When the pliers head retracts, the unlocking button can be released, the unlocking mechanism will be closed (the reverse tooth structure does not affect the pull of the handle), and the handle can be pulled back to retract the pliers head. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 A schematic diagram of the structure without a sleeve and with an opening / closing clamp slider. Figure 3 This is a schematic diagram of the inverted tooth structure.

[0022] Figure 4 A schematic diagram of the unlock button A and its inclined block structure.

[0023] Figure 5 A schematic diagram of the unlock button B and its inclined block structure. Detailed Implementation

[0024] like Figures 1-5 As shown, Example 1: An endoscope clamping forceps, comprising a clamping assembly 1, an opening and closing clamping slider 2, a sleeve 3, and a handle 4. The spring hose 103 of the clamping assembly 1 passes through the sleeve 3 and is fixedly connected to the handle 4. The clamping head opening and closing clamping wire 102 of the clamping assembly 1 is built into the spring hose 103 and fixedly connected to the opening and closing clamping slider 2. The opening and closing clamping slider 2 is sleeved on the handle 4. The surface of the opening and closing clamp slider 2 is equipped with an unlocking button A, and the surface of the handle 4 is correspondingly provided with several backward-facing reverse teeth. The unlocking button A is provided with a beveled block that engages with the reverse teeth (e.g., Figure 4 As shown, the inclined block moves diagonally forward and is used to limit the forward movement of the opening and closing clamp slider 2; when the unlock button A is opened, the inclined block disengages from the reverse tooth.

[0025] The unlock button A is mounted in the mounting groove on the surface of the opening and closing clamp slider 2 via a shaft end flip-type installation; Preferably, it also includes a guide tube 101, the two ends of which are respectively connected to the sleeve 3 and the connecting sleeve of the clamp assembly 1 to form a clamp assembly channel; the spring hose 103 passes through the guide tube 101 and the sleeve 3 and is fixedly connected to the handle 4.

[0026] When opening the clamp, pressing the front of the unlock button A with a finger causes its rear end to lift up, disengaging the reverse teeth from the inclined block of the unlock button A. Simultaneously, the clamping slider 2 slides forward, opening the clamps via the clamping wire 102. When closing the clamp, pulling the slider back releases the unlock button (which resets due to the elasticity of the button's material), closing the unlocking mechanism (the reverse teeth structure does not affect the pull-back of the clamping slider 2). Once the clamps hold the tissue, they remain closed. This design features simple locking operation, requires no hands, is highly efficient, and prevents loosening.

[0027] Preferably, the unlocking button A has a torsion spring installed on the end of the round shaft that cooperates with the mounting groove of the opening and closing clamp slider 2, so that the unlocking button B can be automatically reset and locked.

[0028] Example 2: In addition to Example 1, it also includes a locking structure for the forward and backward movement of the pliers head. The locking structure for the forward and backward movement of the pliers head consists of several forward-facing reverse teeth on the front of the handle 4 and an unlocking button B on the sleeve 3. The unlocking button B is provided with a wedge block that cooperates with the reverse teeth to limit the forward movement of the handle 4. When the unlocking button B is opened, the wedge block disengages from the reverse teeth.

[0029] The unlock button B is mounted in the mounting groove on the surface of the sleeve 3 by flipping the shaft end.

[0030] When the forceps head needs to extend forward, the thumb of the hand holding sleeve 3 presses the front end of the unlock button B, causing its rear end to lift up and the reverse teeth to disengage from the inclined block of unlock button B. The other hand can then push the handle forward to extend the forceps head. When the forceps head retracts, the unlock button can be released (it resets under the elasticity of its own material), the unlocking mechanism closes, and the reverse teeth engage with the inclined block (the reverse tooth structure does not affect the backward pull of the handle). Pulling the handle backward retracts the forceps head. At the same time, the forceps head will not extend further forward due to tissue tension, thus lifting the tissue and exposing the surgical field.

[0031] Preferably, the unlock button B is equipped with a torsion spring that mates with the mounting groove of the sleeve 3, which facilitates the automatic reset and locking of the unlock button B.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An endoscope clamp, comprising a clamp assembly (1), an opening / closing clamp slider (2), a sleeve (3), and a handle (4), wherein a spring hose (103) of the clamp assembly (1) passes through the sleeve (3) and is fixedly connected to the handle (4); an opening / closing clamp wire (102) of the clamp head of the clamp assembly (1) is housed within the spring hose (103) and fixedly connected to the opening / closing clamp slider (2); the opening / closing clamp slider (2) is fitted onto the handle (4); characterized in that, The surface of the opening and closing clamp slider (2) is equipped with an unlocking button A, and the surface of the handle (4) is provided with several backward-facing reverse teeth. The unlocking button A is provided with a slanted block that cooperates with the reverse teeth and is used to limit the forward movement of the opening and closing clamp slider (2). When the unlocking button A is opened, the slanted block and the reverse teeth are disengaged. When the unlocking button A is restored, the slanted block and the reverse teeth press against the limit position.

2. The endoscope clamping forceps according to claim 1, characterized in that, The unlock button A is mounted in the mounting groove on the surface of the opening and closing clamp slider (2) by flipping the shaft end.

3. The endoscope clamping forceps according to claim 2, characterized in that, The front end of the slanted block of the unlock button A has rounded corners.

4. The endoscope clamping forceps according to claim 2, characterized in that, The unlock button A is a round shaft end and is equipped with a torsion spring that cooperates with the mounting groove of the opening and closing clamp slider (2).

5. The endoscope clamping forceps according to claim 1, characterized in that, It also includes a locking structure for the front and rear movement of the pliers head. The locking structure for the front and rear movement of the pliers head consists of several forward-facing reverse teeth on the front part of the handle (4) and a release button B on the sleeve (3). The release button B is provided with an inclined block that cooperates with the reverse teeth to limit the forward movement of the handle (4). Open unlock button B, the wedge block and the reverse tooth disengage; restore unlock button B, the wedge block and the reverse tooth press against the limit.

6. The endoscope clamping forceps according to claim 5, characterized in that, The unlock button B is installed in the mounting groove on the surface of the sleeve (3) by flipping the shaft end.

7. The endoscope clamping forceps according to claim 6, characterized in that, The front end of the slanted block of the unlock button B has rounded corners.

8. The endoscope clamping forceps according to claim 6, characterized in that, The unlock button B is a round shaft end and is equipped with a torsion spring that mates with the mounting groove of the sleeve (3).

9. The endoscope clamping forceps according to claim 1, characterized in that, It also includes a guide tube (101), the two ends of which are connected to the sleeve (3) and the connecting sleeve of the clamp assembly (1) to form a clamp assembly channel; the spring hose (103) passes through the guide tube (101) and the sleeve (3) and is fixedly connected to the handle (4).

10. An endoscope clamp according to claim 2 or 6, characterized in that, The front ends of unlock buttons A and B are pressable parts, and the rear ends are reset by the elasticity of their own materials after being released.

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