Surgical instruments and their assembly methods

Abstract

This application relates to a surgical instrument and a method for assembling the same, wherein the power discharge mechanism includes a circuit board and a sliding member, the circuit board includes a discharge circuit, a conductive sheet, and a conductive contact surface, wherein the fixed end of the conductive sheet is fixed to the circuit board, the conductive contact surface faces an extended segment of the conductive sheet, the sliding member faces the conductive sheet and can move linearly relative to the power assembly, in a first position at least a portion of the extended segment of the conductive sheet and the conductive contact surface are separated from each other, and in a second position at least a portion of the extended segment of the conductive sheet and the conductive contact surface are in contact with each other. The discharge circuit of this application achieves on / off by the contact / separation relationship between the conductive sheet and the conductive contact surface and is not limited to the contact / separation between the pair of contact ends of the discharge mechanism and the power supply.

Claims

1. A surgical instrument comprising a power supply assembly, a power supply assembly seat for housing the power supply assembly, and a power supply discharge mechanism, wherein the power supply discharge mechanism is attached to the power supply assembly, and the power supply discharge mechanism is A circuit board comprising a discharge circuit, a conductive sheet, and a conductive contact surface integrated on the circuit board, wherein the conductive sheet comprises a fixed end and an extended segment, the fixed end of the conductive sheet being electrically connected to the first end of the discharge circuit, the extended segment of the conductive sheet and the conductive contact surface being switchable between contact conductivity and disconnection, and the conductive contact surface being electrically connected to the second end of the discharge circuit. A surgical instrument comprising a sliding member that is slidable between a first position and a second position, wherein when the sliding member is in the first position, the extended segment of the conductive sheet is detached from the conductive contact surface and the discharge circuit is in the off state, and when the sliding member is in the second position, the extended segment of the conductive sheet is in contact with the conductive contact surface and conducts, and the discharge circuit is in the conductive state.

2. The surgical instrument according to claim 1, characterized in that the fixed end is configured to be rigid, and at least a portion of the segments of the extended segment are configured to be flexible, thereby allowing the extended segment to deflect relative to the fixed end, thereby bringing the conductive sheet and the conductive contact surface into contact with each other.

3. The surgical instrument according to claim 2, wherein the extending segment includes a transition segment and a terminal segment, wherein the transition segment extends along a direction parallel to the linear movement direction of the slide member and connects the fixed end to the terminal segment, and the transition segment is separated from the slide member perpendicular to the terminal segment.

4. The surgical instrument according to claim 3, wherein the slide member has a first operating surface and a second operating surface, and when the slide member is in a first position, the tip of the end segment is located on the first operating surface, and when the slide member is in a second position, the tip of the end segment is located on the second operating surface, and the height of the first operating surface is lower vertically than that of the second operating surface.

5. The surgical instrument according to claim 2, characterized in that the extended segment is designed such that the extended segment and the conductive contact surface are in the form of a normally closed switch.

6. The surgical instrument according to claim 5, wherein the sliding member includes a first projection, which is designed to interpose between the extended segment and the conductive contact surface when the sliding member is in a first position, thereby ensuring the subsequent separation of the two.

7. The surgical instrument according to claim 4 or 6, characterized in that a second projection facing the conductive sheet is provided on the second operating surface of the slide member, and when the slide member is in the second position, the second projection prevents the slide member from sliding in the direction of the first position.

8. The surgical instrument according to claim 2, characterized in that the position of the conductive contact surface is such that, when the slide member is in the second position, at least a portion of the extended segment of the conductive sheet contacts the circuit board.

9. The surgical instrument according to claim 1, wherein the circuit board further includes an input terminal and an output terminal for electrically connecting to a positive power terminal and a negative power terminal, respectively, wherein the input terminal is electrically connected to a third terminal of the discharge circuit, the output terminal is electrically connected to a fourth terminal of the discharge circuit, and the discharge circuit includes a discharge resistor.

10. The surgical instrument according to claim 9, wherein the power supply assembly seat includes a first electrical contact terminal and a second electrical contact terminal, the first electrical contact terminal being used for electrical connection to the input terminal of the circuit board and the second electrical contact terminal being used for electrical connection to the output terminal of the circuit board.

11. The surgical instrument according to claim 9 or 10, wherein the power supply assembly seat further includes a contact portion for contacting the slide member, so that during the period in which the power supply assembly is assembled to the surgical instrument, the slide member slides relative to the power supply assembly, and the contact portion has the same or similar cross-sectional shape as the slide member.

12. The power supply assembly base has guide rails, and the assembly method is as follows: The power supply assembly is placed in the first position of the power supply assembly seat, the contact portion and the slide member are separated from each other, the conductive sheet is placed on the slide member, the extended segment of the conductive sheet and the conductive contact surface are separated from each other, and the discharge circuit is in the off state. The power supply assembly is pushed forward along the guide rail to an intermediate position, the contact portion contacts the slide member and maintains relative stationary position therewith, the second projection of the slide member contacts the end segment of the extended segment and forces the conductive sheet to elastically deform, the extended segment is deflected relative to the fixed end and continues until the extended segment contacts the conductive contact surface, and the discharge circuit is in the ON state. A method for assembling a surgical instrument according to any one of claims 1 to 4, 7 to 11, comprising: continuing to push the power supply assembly forward along the guide rail to a second position, the second projection moving to pass the tip of the end segment, preventing the sliding member from moving to a first position and thereby preventing the conductive sheet from detaching from the conductive contact surface, and keeping the discharge circuit in the ON state.

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