Mechanical safety device and powered anastomosis device

Abstract

The application provides a mechanical safety device and an electric anastomat, and the mechanical safety device comprises a shell, a closing handle, a firing assembly and a safety assembly. The closing handle and the firing assembly are assembled to the shell and can rotate relative to the shell under external force; the safety assembly is assembled to the shell and located between the closing handle and the firing assembly, and the safety assembly comprises a button body penetrating through the shell and exposed on both sides of the shell; a limiting groove and a limiting part protruding towards the firing assembly are arranged on the outer wall of the button body, a stop part extending towards the button body is arranged on the closing handle, and the firing assembly is provided with an abutting part extending towards the button body; in the initial state, the stop part extends into the limiting groove, the limiting part abuts against the abutting part, and the safety assembly and the firing assembly are in the locked state; the closing handle is pressed to make the stop part separate from the limiting groove, and the safety assembly is in the unlocked state; the button body is pressed to make the limiting part separate from the abutting part, and the firing assembly is in the unlocked state. Compared with the prior art, the mechanical safety device is safer, can reliably avoid misoperation, is more in line with ergonomics, has a simple structure, and is more beautiful in modeling.

Description

Technical Field

[0001] This invention relates to a mechanical safety device and an electric stapler, belonging to the field of medical devices. Background Technology

[0002] A stapler is a medical suturing device typically used to replace manual cutting and suturing of tissues. Existing staplers use a mechanical handle to close the jaws at one end, and then a trigger switch activates a motor to control the cutting blade. However, accidental activation of the trigger switch is common in practical use, necessitating appropriate safety devices to prevent unnecessary damage to the patient's tissues due to misoperation.

[0003] The safety devices of existing electric staplers that control the opening and closing of the jaws via mechanical handles are mostly of the paddle type, which has certain defects in terms of aesthetics and ergonomics, thus posing certain safety hazards.

[0004] In view of this, it is indeed necessary to improve the safety device of the existing electric stapler in order to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a mechanical safety device that is not only safer and can reliably prevent misoperation, but is also more ergonomic.

[0006] To achieve the above objectives, the present invention provides a mechanical safety device, comprising:

[0007] case;

[0008] The handle is closed, fitted to the housing, and can rotate relative to the housing under external force;

[0009] The firing assembly is mounted on the housing and can rotate relative to the housing under the action of external force to achieve electric start-up;

[0010] A safety assembly, fitted into the housing and located between the closing handle and the firing assembly, the safety assembly including a button body extending through the housing and exposed at both ends on opposite sides of the housing;

[0011] The button body has a limiting groove and a limiting part protruding towards the firing assembly on its outer wall. The closing handle has a stop part extending towards the button body, and the firing assembly has an abutting part extending towards the button body. In the initial state, the stop part extends into the limiting groove, and the limiting part abuts against the abutting part, and the safety assembly and the firing assembly are in a locked state. Pressing the closing handle disengages the stop part from the limiting groove, and the safety assembly is in an unlocked state. Pressing the button body disengages the limiting part from the abutting part, and the firing assembly is in an unlocked state.

[0012] As a further improvement of the present invention, the mechanical safety device further includes a clamp plate located inside the housing. The closing handle, the firing assembly, and the safety assembly are all mounted on the clamp plate. The clamp plate is provided with two independent and mutually aligned mounting holes for mounting the button body. When the button body is mounted on the clamp plate, the limiting groove and the limiting part are both located between the two mounting holes.

[0013] As a further improvement of the present invention, the clamp plate is provided with two oppositely arranged mounting arms, each mounting arm having a mounting hole for the button body to pass through. When the button body is assembled on the clamp plate, the limiting groove and the limiting part are both located between the two mounting arms.

[0014] As a further improvement of the present invention, one of the mounting arms is provided with an opening communicating with a corresponding mounting hole. The opening is configured to allow the limiting part to pass through, and when the button body is pressed, the limiting part is allowed to move within the opening.

[0015] As a further improvement of the present invention, the safety component further includes a positioning bead installed on the button body. The clamp plate is provided with a plurality of positioning slots for receiving the positioning bead. When any end of the button body is pressed, the positioning bead can switch positions between the plurality of positioning slots and position the button body.

[0016] As a further improvement of the present invention, the button body is also provided with a positioning boss protruding from its outer wall surface, and the clamping plate is provided with a receiving groove for receiving the positioning boss. The receiving groove is connected to two mounting holes. The positioning bead is provided on the positioning boss, and a plurality of positioning grooves are recessed on the inner wall of the receiving groove and arranged in a straight line.

[0017] As a further improvement of the present invention, the limiting part includes a first limiting part and a second limiting part arranged side by side and spaced apart, and the abutting part includes a first abutting part and a second abutting part arranged side by side and spaced apart. In the initial state, the first limiting part and the first abutting part abut against each other, and the second limiting part and the second abutting part abut against each other. After pressing either end of the button body, the first limiting part and the first abutting part are misaligned, and the second limiting part and the second abutting part are misaligned.

[0018] As a further improvement of the present invention, a first groove is formed between the first limiting part and the second limiting part, and a second groove is formed between the first abutting part and the second abutting part. When the button body is pressed and then the firing component is pressed, the first limiting part or the second limiting part extends into the second groove, and the first abutting part or the second abutting part extends into the first groove.

[0019] As a further improvement of the present invention, the firing assembly includes a firing button, a trigger lever, and a firing micro switch. The firing button is exposed below the housing, and the trigger lever and the firing micro switch are both housed within the housing. The firing assembly is configured to press the firing button, and the firing button moves the trigger lever to trigger the firing micro switch, thereby achieving electrical start-up.

[0020] Another object of the present invention is to provide an electric stapler having the above-mentioned mechanical safety device.

[0021] To achieve the above objectives, the present invention provides an electric stapler, comprising:

[0022] The aforementioned mechanical safety devices;

[0023] A battery pack assembly, mounted on the housing, powers the electric anastomosis device;

[0024] The anvil assembly is kinetically connected to the closing handle; pressing the closing handle closes the jaws of the anvil assembly.

[0025] The beneficial effects of this invention are as follows: This invention assembles a safety component into the housing and positions it between the closing handle and the firing component. It also provides a limiting groove and a limiting portion protruding towards the firing component on the outer wall of the button body, a stop portion extending towards the button body on the closing handle, and an abutting portion extending towards the button body on the firing component. Therefore, in the initial state, the safety component and the firing component are locked by the stop portion extending into the limiting groove and the limiting portion abutting against the abutting portion. When the closing handle is pressed, causing the stop portion to disengage from the limiting groove, the safety component is unlocked. Pressing the button body again disengages the limiting portion from the abutting portion, at which point the firing component is unlocked. Compared to existing technologies, the mechanical safety device of this invention is safer, reliably prevents accidental operation, is more ergonomic, has a simpler structure, and is more aesthetically pleasing. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the electric stapler of the present invention.

[0027] Figure 2 yes Figure 1 Internal assembly diagram of the gun body components.

[0028] Figure 3 yes Figure 1 Another angle of the internal assembly diagram of the gun body component.

[0029] Figure 4 yes Figure 2 Cross-sectional view.

[0030] Figure 5 yes Figure 2 Assembly diagram of the closed handle, firing assembly, safety assembly, and clamp.

[0031] Figure 6 yes Figure 5 A three-dimensional structural diagram of the insurance component.

[0032] Figure 7 yes Figure 6 A three-dimensional structural diagram of the insurance component from another angle.

[0033] Figure 8 yes Figure 5 A three-dimensional structural diagram of the middle plywood.

[0034] Figure 9 yes Figure 8 A three-dimensional structural diagram of the middle plate from another angle.

[0035] Figure 10 yes Figure 5 A three-dimensional structural diagram of the closed handle.

[0036] Figure 11 yes Figure 5 A three-dimensional structural diagram of the firing button. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Please see Figures 1-2 As shown, this invention discloses an electric stapler 100, comprising: a gun body assembly 1, a barrel assembly 2, and an anvil assembly 3. The barrel assembly 2 is located between the gun body assembly 1 and the anvil assembly 3, providing a driving connection between the gun body assembly 1 and the anvil assembly 3. The gun body assembly 1 drives the anvil assembly 3 to close its jaws for suturing, and drives a cutting blade (not shown) located within the anvil assembly 3 to move forward and backward via a rack and pinion transmission to complete the cutting action.

[0039] The gun assembly 1 includes a housing 11, a battery pack assembly 12 and a motor assembly 13 housed inside the housing 11, and a closing handle 14, a firing assembly 15, and a safety assembly 16 mounted on the housing 11. The housing 11, the closing handle 14, the firing assembly 15, and the safety assembly 16 constitute a mechanical safety device 200. The battery pack assembly 12 is mounted on the housing 11 and supplies power to the motor assembly 13. When energized, the motor assembly 13 rotates, driving a gear and rack transmission. The cutting blade moves forward and backward under the transmission of the gear and rack to complete the cutting action.

[0040] In this embodiment, the battery pack assembly 12 and the motor assembly 13 are arranged approximately vertically. The motor assembly 13 is located within the grip portion (not labeled) below the housing 11, and the battery pack assembly 12 is located within the housing 11 at the end furthest from the anvil assembly 3. The mechanical safety device 200 ensures that the cutting blade performs the cutting action only after the jaws of the anvil assembly 3 are closed, thus preventing accidental operation.

[0041] like Figures 4-11 As shown, the closing handle 14 and the firing assembly 15 can rotate relative to the housing 11 under external force. Pressing the closing handle 14 closes the jaws of the anti-pin assembly 3. Pressing the firing assembly 15 energizes the motor assembly 13, enabling electrical start-up. The safety assembly 16 is located between the closing handle 14 and the firing assembly 15. The safety assembly 16 includes a button body 161 that penetrates the housing 11 and has both ends exposed on opposite sides of the housing 11. The safety assembly 16 ensures that the closing handle 14, the safety assembly 16, and the firing assembly 15 are operated in the correct sequence, preventing accidental operation.

[0042] The two ends of the button body 161 are exposed at opposite ends of the housing 11, which makes it easy to press and is also more ergonomic, so as not to cause discomfort. The outer wall of the button body 161 is provided with a limiting groove 160 and a limiting part 162 protruding toward the firing assembly 15. The closing handle 14 is provided with a stop part 141 extending toward the button body 161, and the firing assembly 15 is provided with an abutting part 150 extending toward the button body 161. In the initial state, the stop part 141 extends into the limiting groove 160, the limiting part 162 abuts against the abutting part 150, and the safety assembly 16 and the firing assembly 15 are in a locked state. Pressing the closing handle 14 causes the stop part 141 to disengage from the limiting groove 160, and the safety assembly 16 is in an unlocked state, i.e., it can be pressed. Pressing the button body 161 again causes the limiting part 162 to disengage from the abutting part 150, and the firing assembly 15 is in an unlocked state, i.e., it can be pressed. Ensure that the closing handle 14, the safety assembly 16, and the firing assembly 15 are performed in the correct order.

[0043] Specifically, such as Figure 6 and Figure 7 As shown, in this embodiment, the limiting part 162 preferably includes a first limiting part 1621 and a second limiting part 1622 arranged side by side and spaced apart, and the abutting part 150 includes a first abutting part 1501 and abutting part 1502 arranged side by side and spaced apart. In the initial state, the first limiting part 1621 abuts against the first abutting part 1501, and the second limiting part 1622 abuts against the second abutting part 1502. After pressing either end of the button body 161, the first limiting part 1621 and the first abutting part 1501 are misaligned, and the second limiting part 1622 and the second abutting part 1502 are misaligned.

[0044] A first groove 1620 is formed between the first limiting portion 1621 and the second limiting portion 1622, and a second groove 1500 is formed between the first abutting portion 1501 and the second abutting portion 1502. When the button body 161 is pressed and then the firing assembly 15 is pressed, either the first limiting portion 1621 or the second limiting portion 1622 extends into the second groove 1500, and either the first abutting portion 1501 or the second abutting portion 1502 extends into the first groove 1620. The limiting groove 160 is approximately located between the first limiting portion 1621 and the second limiting portion 1622.

[0045] Of course, in other alternative embodiments, the limiting part 162 may be provided as one or more, as long as it can limit the firing component 15 in the initial state, there is no limitation on this. Pressing either end of the button body 161 can unlock the firing component 15, which is convenient to operate.

[0046] like Figure 8 and Figure 9 As shown, the mechanical safety device 200 also includes a clamping plate 17 located inside the housing 11. The closing handle 14, the firing assembly 15, and the safety assembly 16 are all mounted on the clamping plate 17. The closing handle 14 and the firing assembly 15 are both connected to the clamping plate 17 via a pivot (not labeled) to rotate relative to the clamping plate 17 under external force. The closing handle 14 and the firing assembly 15 are partially exposed below the housing 11 for easy operation.

[0047] The clamping plate 17 has two independent and mutually aligned mounting holes 171 for mounting the button body 161. When the button body 161 is assembled on the clamping plate 17, the limiting groove 160 and the limiting part 162 are both located between the two mounting holes 171. The outer peripheral wall of the button body 161 is also provided with a limiting surface 1611, and the inner peripheral wall of the mounting hole 171 is provided with a corresponding mating surface 1711 that mates with the limiting surface, to prevent the button body 161 from rotating within the two mounting holes 171, which would cause the limiting part 162 to misalign with the abutting part 150.

[0048] Specifically, the clamping plate 17 is provided with two opposing mounting arms 172, each mounting arm 172 having a mounting hole 171 for the button body 161 to pass through. When the button body 161 is assembled on the clamping plate 17, the limiting groove 160 and the limiting part 162 are both located between the two mounting arms 172. One of the mounting arms 172 also has an opening 1721 communicating with the corresponding mounting hole 171. The opening 1721 is configured to allow the limiting part 162 to pass through, and when the button body 161 is pressed, the limiting part 162 is allowed to move within the opening 1721. The opening 1721 can be used to mount the button body 161 and also provides pressing and moving space when the button body 161 is pressed. In this embodiment, the limiting groove 160 and the limiting part 162 are located in the middle position of the button body 161 near the opening 1721, so as to reserve sufficient pressing and moving space between the limiting part 162 and the mounting arm 172 which does not have the opening 1721.

[0049] The safety component 16 also includes a positioning bead 163 installed on the button body 161. The clamping plate 17 is provided with a plurality of positioning slots 173 for receiving the positioning bead 163. When any end of the button body 161 is pressed, the positioning bead 163 can switch positions among the plurality of positioning slots 173 and position the button body 161.

[0050] Specifically, the button body 161 also has a positioning boss 1612 protruding from its outer wall surface. The clamping plate 17 has a corresponding receiving groove 174 for accommodating the positioning boss 1612. The receiving groove 174 communicates with two mounting holes 171. The positioning bead 163 is disposed on the positioning boss 1612, ensuring reliable installation of the positioning bead 163 to the button body 161 and preventing it from falling off. Multiple positioning grooves 173 are recessed into the inner wall of the receiving groove 174 and arranged in a straight line. When the positioning bead 163 is received within the positioning groove 173, it effectively positions the button body 161. Preferably, there are three positioning grooves 173. Initially, the positioning bead 163 is located in the middle positioning groove 173.

[0051] Combination Figure 5 and Figure 11 As shown, the firing assembly 15 includes a firing button 151, a trigger lever 152, and a firing micro switch 153. The firing button 151 is exposed below the housing 11, and the abutment portion 150 is located on the firing button 151. The trigger lever 152 and the firing micro switch 153 are both housed within the housing 11, and the trigger lever 152 is mounted below the firing micro switch 153 on the clamping plate 17. The firing assembly 15 is configured such that pressing the firing button 151 causes the firing button 151 to move the trigger lever 152, thereby triggering the firing micro switch 153 to achieve electrical start-up, allowing the cutting blade to cut. The firing assembly 15 also includes a tension spring 154, one end of which is connected to the firing button 151 and the other end is connected to the clamping plate 17, so that after the external force pressing the firing button 151 disappears, the firing button 151 resets, the motor assembly 13 is de-energized and stops rotating, and the cutting blade stops cutting.

[0052] Combination Figure 3 and Figure 10As shown, in this embodiment, the anvil assembly 3 is tractively connected to the closing handle 14. The closing handle 14 forms a linkage structure through the closing link 142 and the barrel push slider 143. Pressing the closing handle 14 causes the barrel push slider 143 to push the jaws of the anvil assembly 3 to close. The top of the closing handle 14 is provided with an integrally formed drive rod 144. One end of the drive rod 144 is connected to the closing link 142, and the closing link 142 is connected to the barrel push slider 143. The other end of the drive rod 144 is provided with a first limiting structure 1441 so that after the external force pressing the closing handle 14 disappears, the closing handle 14 remains in the pressed state, that is, the jaws of the anvil assembly 3 remain closed.

[0053] Preferably, the housing 11 has push knobs 18 on opposite sides for opening the jaws of the anvil assembly 3. Each push knob 18 has a second limiting structure 181 extending toward the closing handle 14. When the closing handle 14 is pressed, the first limiting structure 1441 engages with the second limiting structure 181, limiting the closing handle 14. Pushing the push knob 18 causes the second limiting structure 181 to shift, thus misaligning with the first limiting structure 1441. The closing handle 14 then resets, and the jaws of the anvil assembly 3 open.

[0054] In summary, the present invention assembles the safety component 16 into the housing 11 and positions it between the closing handle 14 and the firing component 15. It also provides a limiting groove 160 and a limiting portion 162 protruding toward the firing component 15 on the outer wall of the button body 161. Furthermore, it provides a stop portion 141 extending toward the button body 161 on the closing handle 14, and an abutting portion 150 extending toward the button body 161 on the firing component 15. Therefore, in the initial state, the stop portion 141 extends into the limiting groove 160, and the limiting portion 162 abuts against the abutting portion 150, ensuring that the safety component 16 and the firing component 15 are locked. After pressing the closing handle 14, the stop portion 141 disengages from the limiting groove 160, and the safety component 16 is unlocked. Pressing the button body 161 again disengages the limiting portion 162 from the abutting portion 150, at which point the firing component 15 is unlocked. Compared with the prior art, the mechanical safety device 200 of the present invention is safer, can reliably avoid misoperation, and is more ergonomic. Its simple structure makes the electric stapler 100 more aesthetically pleasing.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A mechanical safety device, characterized in that, include: case; The handle is closed, fitted to the housing, and can rotate relative to the housing under external force; The firing assembly is mounted on the housing and can rotate relative to the housing under the action of external force to achieve electric start-up; A safety assembly, fitted into the housing and located between the closing handle and the firing assembly, the safety assembly including a button body extending through the housing and exposed at both ends on opposite sides of the housing; The button body has a limiting groove and a limiting part protruding towards the firing assembly on its outer wall. The closing handle has a stop part extending towards the button body, and the firing assembly has an abutting part extending towards the button body. In the initial state, the stop part extends into the limiting groove, and the limiting part abuts against the abutting part, and the safety assembly and the firing assembly are in a locked state. Pressing the closing handle disengages the stop part from the limiting groove, and the safety assembly is in an unlocked state. Pressing the button body disengages the limiting part from the abutting part, and the firing assembly is in an unlocked state.

2. The mechanical safety device according to claim 1, characterized in that: The mechanical safety device also includes a clamp plate located inside the housing. The closing handle, the firing assembly, and the safety assembly are all mounted on the clamp plate. The clamp plate has two independent and mutually aligned mounting holes for mounting the button body. When the button body is mounted on the clamp plate, the limiting groove and the limiting part are both located between the two mounting holes.

3. The mechanical safety device according to claim 2, characterized in that: The clamp plate is provided with two oppositely arranged mounting arms, each mounting arm having a mounting hole for the button body to pass through. When the button body is assembled on the clamp plate, the limiting groove and the limiting part are both located between the two mounting arms.

4. The mechanical safety device according to claim 3, characterized in that: One of the mounting arms also has an opening that communicates with the corresponding mounting hole. The opening is configured to allow the limiting part to pass through and to allow the limiting part to move within the opening when the button body is pressed.

5. The mechanical safety device according to claim 2, characterized in that: The safety component also includes a positioning bead installed on the button body. The clamp plate is provided with a plurality of positioning slots for receiving the positioning bead. When either end of the button body is pressed, the positioning bead can switch positions between the plurality of positioning slots and position the button body.

6. The mechanical safety device according to claim 5, characterized in that: The button body is also provided with a positioning boss protruding from its outer wall surface. The clamping plate is provided with a receiving groove for receiving the positioning boss. The receiving groove is connected to two mounting holes. The positioning bead is provided on the positioning boss. Multiple positioning grooves are recessed on the inner wall of the receiving groove and arranged in a straight line.

7. The mechanical safety device according to claim 1, characterized in that: The limiting part includes a first limiting part and a second limiting part arranged side by side and spaced apart. The abutting part includes a first abutting part and a second abutting part arranged side by side and spaced apart. In the initial state, the first limiting part and the first abutting part abut against each other, and the second limiting part and the second abutting part abut against each other. After pressing either end of the button body, the first limiting part and the first abutting part are misaligned, and the second limiting part and the second abutting part are misaligned.

8. The mechanical safety device according to claim 7, characterized in that: A first groove is formed between the first limiting part and the second limiting part, and a second groove is formed between the first abutting part and the second abutting part. When the button body is pressed and then the firing component is pressed, the first limiting part or the second limiting part extends into the second groove, and the first abutting part or the second abutting part extends into the first groove.

9. The mechanical safety device according to claim 1, characterized in that: The firing assembly includes a firing button, a trigger lever, and a firing micro switch. The firing button is exposed below the housing, and the trigger lever and the firing micro switch are both housed within the housing. The firing assembly is configured to press the firing button, which in turn moves the trigger lever to trigger the firing micro switch, thereby achieving electrical start-up.

10. An electric stapler, characterized in that, include: Mechanical safety device as described in any one of claims 1-9; A battery pack assembly, mounted on the housing, powers the electric anastomosis device; The anvil assembly is kinetically connected to the closing handle; pressing the closing handle closes the jaws of the anvil assembly.

Images