A puncture device

Abstract

This invention discloses a puncture device, comprising a puncture cone and a puncture body. The puncture cone includes a puncture rod, a puncture blade, and a puncture blade sheath. The puncture blade is located at the tip of the puncture cone and is connected to the puncture rod. The puncture blade and the puncture rod are located within the sheath. The puncture body includes an electric motor, a power conversion component, and a first proximity switch. At least one trigger structure is provided at the proximal end of the puncture blade sheath. When the trigger structure moves to a specific position of the first proximity switch, the first proximity switch closes, the electric motor starts, and the power conversion component pushes the puncture rod to perform a puncture action. When the trigger structure leaves the specific position of the first proximity switch, the first proximity switch opens, the electric motor stops working, and the puncture rod stops its puncture action. This invention's puncture device uses an electric motor to complete the puncture action, reducing operator effort, improving feel, lowering surgical risks, and increasing operational efficiency.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and in particular to an electric puncture device. Background Technology

[0002] In current minimally invasive surgery, the most essential tool is the trocar, which is used to puncture the abdominal wall and establish a passage between the outside and the abdominal cavity, facilitating the entry of other minimally invasive surgical instruments into the body cavity for surgical procedures. The trocar mainly consists of two parts: a puncture cone and a puncture body. When in use, the puncture body is held by hand, and force is applied by the puncture blade at the tip of the puncture cone to push open the skin tissue and enter the abdominal cavity.

[0003] Existing puncture cones are broadly classified into two types: bladed and bladeless. Bladed puncture cones contain a retractable stainless steel blade, while bladeless puncture cones are made of double-edged plastic. Both types of puncture devices rely entirely on the surgeon's arm force to push the cone into the skin. When encountering difficult-to-puncture tissue sites, the device may need to be rotated left and right to facilitate insertion. If the force is not properly controlled, it can easily reduce the quality of the puncture, causing fascial damage and leading to problems such as fascial injury and foramen hernia.

[0004] How to solve the technical problem that ordinary mechanical puncture devices in the current technology require doctors to exert force to puncture tissue is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to solve the problem that ordinary mechanical puncture devices in the prior art require a doctor's manual force to puncture tissues, which is laborious.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A puncture device includes a puncture cone and a puncture body. The puncture cone includes a puncture rod, a puncture knife, and a puncture knife sheath. The puncture knife is located at the head end of the puncture cone and is connected to the puncture rod. The puncture knife and the puncture rod are located inside the knife sheath. The puncture body includes an electric motor, a power conversion component, and a first proximity switch.

[0008] The proximal end of the piercing blade sheath is provided with at least one triggering structure. When the triggering structure moves to a specific position of the first proximity switch, the first proximity switch closes, the electric motor starts, and the...

[0009] The power conversion component drives the puncture cone to perform a puncture action; when the trigger structure leaves the specific position of the first proximity switch, the first proximity switch is disconnected, the electric motor stops working, and the puncture cone stops the puncture action.

[0010] This invention transforms the traditional mechanical puncture device into an electric mode by adding an electric motor, a power conversion component, and a first proximity switch to the main body of the puncture device, thereby reducing the probability of surgical errors by doctors and reducing surgical pain for patients.

[0011] Furthermore, the proximal end of the puncture cone rod is provided with at least a first protrusion, and the puncture body also includes a second proximity switch;

[0012] When the first protrusion moves to a specific position of the second proximity switch, the first proximity switch opens and the second proximity switch closes, allowing the electric motor to continue operating until the piercing knife moves.

[0013] When the piercing knife sheath stops at its first preset position, the electric motor ceases operation.

[0014] Furthermore, the first preset position of the piercing blade sheath is the deepest part of the piercing blade sheath.

[0015] This invention limits the upward movement of the puncture device by adding a first protrusion at the proximal end of the puncture cone and a second proximity switch to the puncture body, so that when the sheath moves upward, the puncture blade can be controlled to stop at the deepest part of the sheath.

[0016] Furthermore, the proximal end of the puncture cone is provided with at least a second protrusion, and the puncture body also includes a third proximity switch;

[0017] When the second protrusion moves to a specific position of the third proximity switch, the third proximity switch closes, causing the electric motor to continue working until the piercing knife stops moving at the second preset position of the piercing knife sheath, at which point the electric motor stops working.

[0018] Furthermore, the second preset position of the piercing knife sheath is the shallowest part of the piercing knife sheath.

[0019] This invention limits the downward movement of the puncture device by adding a second protrusion to the proximal end of the puncture cone rod and a third proximity switch to the puncture body, so that when the sheath moves downward, the puncture blade can be controlled to stop at the shallowest part of the sheath.

[0020] Furthermore, the puncture body also includes a main switch. When the main switch is closed, the puncture device is in electric mode, and when the main switch is open, the puncture device is in manual mode.

[0021] This invention adds a master switch mode, which can realize both manual and electric modes of the puncture device, thereby avoiding the situation where the operator can still perform the puncture operation manually if the circuit fails.

[0022] Furthermore, the distance between the first protrusion and the second protrusion at the proximal end of the puncture cone is at least greater than the length of the blade of the puncture knife.

[0023] Furthermore, the second proximity switch and the third proximity switch of the puncture body are both located on the same surface of the support of the puncture body.

[0024] The first proximity switch, the second proximity switch, and the third proximity switch of this invention can be of the same type or different types of switches, as long as they can control the operation of the electric motor.

[0025] Furthermore, the puncture body also includes a gear switch, which is used to control the rotation speed of the electric motor, and the gear switch has at least one gear.

[0026] Furthermore, the first proximity switch is a photoelectric switch.

[0027] Furthermore, the second proximity switch is a photoelectric switch.

[0028] Furthermore, the third proximity switch is a photoelectric switch.

[0029] With this design, the present invention has at least the following advantages:

[0030] (1) By replacing the traditional manual puncture device with an electric puncture device, the present invention greatly improves the accuracy of the surgeon's hand-held force and enables the puncture device to perform puncture actions flexibly.

[0031] (2) The electric puncture device of the present invention adopts a proximity switch control method, which has high puncture stability, facilitates operation by doctors, and reduces surgical risks.

[0032] (3) The present invention uses a gear switch to control the rotation speed of the electric motor, thereby enabling the adjustment of the puncture speed.

[0033] (4) The present invention has a simple structure, good effect, low cost and easy process implementation. Attached Figure Description

[0034] The above is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Figure 1 This is a structural block diagram of the puncture device of the present invention;

[0036] Figure 2 This is a schematic diagram of the puncture device structure according to an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram showing the positions of the trigger rod and the first proximity switch according to an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the structure of the first protrusion and the second proximity switch, and the second protrusion and the third proximity switch according to an embodiment of the present invention;

[0039] Figure 5 This is a circuit diagram of a gear switch according to an embodiment of the present invention;

[0040] Figure 6 This is a circuit diagram of a master switch and a gear switch according to an embodiment of the present invention;

[0041] In the attached figures, 1 is the puncture cone, 11 is the puncture knife, 12 is the puncture cone rod, 13 is the puncture knife sheath, 131 is the trigger rod, 2 is the puncture body, 21 is the electric motor, 22 is the power conversion component, 23 is the first proximity switch, 24 is the second proximity switch, 121 is the first protrusion, 122 is the second protrusion, 25 is the third proximity switch, 26 is the gear switch, and 27 is the main switch. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0043] In this article, "up" and "down" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0044] Unless otherwise stated, the numerical ranges in this document include not only the entire range within its two endpoints, but also the subranges contained therein.

[0045] In the following description, the end of each component closer to the operator is defined as the proximal end, and the end farther from the operator is defined as the distal end. These proximal and distal designations are for simplicity and clarity only and should not be construed as limiting the scope of the invention.

[0046] A puncture device includes a puncture cone 1 and a puncture body 2. The puncture cone 1 includes a puncture knife 11, a puncture cone rod 12, and a puncture sheath 13. The puncture knife 11 is located at the head end of the puncture cone 2. The puncture knife 11 and the puncture cone rod 12 are connected by a snap-fit ​​or pin. The puncture knife 11 and the puncture cone rod 12 are located inside the puncture sheath 13. The puncture body 2 includes an electric motor 21, a power conversion assembly 22, and a first proximity switch 23. At least one trigger rod 131 is provided at the proximal end of the puncture sheath 13. When the trigger rod 131 moves to a specific position of the first proximity switch 23, the first proximity switch 23 closes, causing the electric motor 21 to push the puncture cone rod 12 to perform a puncture action through the power conversion assembly 22. When the trigger rod 131 leaves the specific position of the first proximity switch 23, the first proximity switch 23 opens, the electric motor 21 stops working, and the puncture cone rod 12 stops the puncture action.

[0047] Here, the power conversion assembly 22 includes a crank wheel. When the electric motor rotates, it drives the crank wheel to rotate synchronously. Through the crank stepped shaft and the crank, the piercing cone and the blade reciprocate back and forth.

[0048] Here, the first proximity switch 23 can be an inductive switch, a capacitive switch, or a photoelectric switch. Preferably, in one embodiment of the present invention, the first proximity switch 23 is a photoelectric switch.

[0049] Specifically, in one embodiment of the present invention, the trigger rod 131 is located at the proximal end of the puncture knife sheath 13, when puncture...

[0050] During the puncture process, the trigger rod 131 of the puncture device moves upward and downward along with the rise and fall of the scalpel sheath. When the trigger rod 131 moves upward to a specific position close to the first proximity switch 23,

[0051] The trigger lever 131 stops moving upward, at which point the first proximity switch 23 closes and the electric motor starts working.

[0052] The trigger rod 131 moves downward. When the trigger rod 131 moves downward to a specific position away from the first proximity switch 23, the first proximity switch 23 is disconnected, and the electric motor stops working. In this embodiment of the invention, the trigger...

[0053] The movement of lever 131 causes the first proximity switch 23 to close and open, resulting in the start and stop of the electric motor. During the puncture process, the first proximity switch 23 remains closed.

[0054] It should be noted that the specific position of the first proximity switch 23 in this embodiment of the invention is defined as the position where the trigger rod 131 moves to the sensing range of the first proximity switch 23.

[0055] In this embodiment of the invention, the combination design of the first proximity switch 23 and the trigger rod 131 facilitates the replacement of different types of switches and triggering methods.

[0056] 5. Further, the proximal end of the puncture cone 12 is provided with at least a first protrusion 121, and the puncture body 2 also includes

[0057] Second proximity switch 24; when the first protrusion 121 moves to a specific position of the second proximity switch 24, the second proximity switch 24 closes, causing the electric motor 21 to continue working until the piercing knife movement stops at the first preset position of the piercing knife sheath 13, at which point the electric motor stops working.

[0058] Here, the first preset position is the deepest part of the piercing blade sheath 13.

[0059] Here, the second proximity switch 24 can be an inductive switch, a capacitive switch, or a photoelectric switch.

[0060] Preferably, in one embodiment of the present invention, the second proximity switch 24 is a photoelectric switch.

[0061] Specifically, in one embodiment of the present invention, during the puncture process of the puncture device, when the trigger rod 131 moves upward to a specific position close to the first proximity switch 23, the trigger rod 131 stops moving upward, and the first proximity switch 23 closes, thereby connecting with the electric motor, and the electric motor starts to work; when the trigger rod 131 starts to move downward and moves to a specific position away from the first proximity switch 23, the first proximity switch 23 opens. At this time, if the first protrusion 121 is located at a specific position of the second proximity switch 24, the second proximity switch 24 closes, and the electric motor continues to work until the first protrusion 121 moves into the sensing range of the second proximity switch 24, the second proximity switch 24 opens, and the puncture knife 11 stops moving at the deepest part of the puncture knife sheath 13, at which point the electric motor stops working.

[0062] It should be noted that the specific position of the second proximity switch 24 in this embodiment of the invention is defined as the position where the first protrusion 121 moves into the sensing range of the second proximity switch 23.

[0063] Furthermore, a second protrusion 122 is provided at the proximal end of the puncture cone rod, and the puncture body also includes a third proximity switch 25;

[0064] When the trigger lever 131 moves to a specific position away from the first proximity switch 23, the first proximity switch 23 is opened. At this time, if the second protrusion 122 is located at a specific position of the third proximity switch 25, the third proximity switch 25 is closed, and the electric motor continues to work.

[0065] When the second protrusion touches the third proximity switch, the third proximity switch closes, disconnects from the electric motor, and controls the movement of the piercing knife to stop at the second preset position of the piercing knife sheath 13.

[0066] Here, the second preset position is the shallowest part of the piercing blade sheath 13.

[0067] Here, the third proximity switch 25 can be an inductive switch, a capacitive switch, or a photoelectric switch. Preferably, in one embodiment of the present invention, the third proximity switch 25 is a photoelectric switch.

[0068] It should be noted that the specific position of the third proximity switch 25 in this embodiment of the invention is defined as the position where the second protrusion 122 moves into the sensing range of the third proximity switch 25.

[0069] The puncture body 2 in this embodiment of the invention also includes a main switch 27. When the main switch 27 is closed, the puncture device is in electric mode. When the main switch 27 is open, the puncture device is in manual mode.

[0070] Specifically, a master switch 27 is provided on the side wall of the puncture body to switch between electric and manual modes of the puncture device. This allows the puncture device to automatically switch between electric and manual modes in case of an unexpected malfunction in electric mode. still The puncture procedure can be continued in manual mode, reducing the operation time.

[0071] The distance between the first protrusion 121 and the second protrusion 122 at the proximal end of the piercing cone is at least greater than the length of the blade of the piercing knife 11.

[0072] In this embodiment of the invention, a first protrusion is provided to ensure that the uppermost distance of the puncture device can control the puncture blade to stop at the deepest part of the sheath.

[0073] In this embodiment of the invention, a second protrusion is provided to ensure that the lowest distance of the puncture device operation can control the puncture blade to stop at the shallowest part of the sheath.

[0074] Furthermore, the second proximity switch 24 and the third proximity switch 25 of the puncture body 2 are both located on the same surface of the support of the puncture body 2.

[0075] The puncture body 2 also includes a position switch 26, which is used to control the rotation speed of the electric motor. The position switch 26 has at least one position.

[0076] Specifically, the gear switch 26 has three gears: high, medium, and low, which are used to control the magnitude of the working current of the electric motor 21, thereby adjusting the puncture speed. Specifically, the higher the working current of the electric motor, the lower the speed of the electric motor 21, and the slower the puncture speed.

[0077] The first proximity switch 23, the second proximity switch 24, and the third proximity switch 25 in this invention can be the same type of switch or different types of switches, as long as they can control the electric motor 21 to work.

[0078] The working process of the puncture device in this embodiment of the invention is as follows: When puncturing the abdominal wall tissue, the puncture cone sleeve of the puncture cone experiences resistance and moves upward axially. The trigger rod at the rear end of the puncture cone sleeve triggers the first proximity switch, the primary circuit is connected, the electric motor rotates, and the power conversion component drives the puncture cone and blade to reciprocate up and down. After the puncture is completed, the resistance of the puncture cone is released, the puncture cone sleeve moves downward axially to reset, the first proximity switch resets, and the primary circuit is disconnected. If there is no secondary circuit, the electric motor stops immediately; if there is a secondary circuit, the secondary circuit is connected, and the electric motor does not stop immediately. Specifically, the puncture cone has a first protrusion. When the first protrusion is not in the stop position, the electric motor continues to rotate. When the first protrusion moves to the stop position, it triggers a second proximity switch, disconnecting the secondary circuit and stopping the blade at the deepest part of the sheath. At this time, if the circuit fails, pushing up the puncture cone sleeve will not expose the blade from the sheath, providing a protective function. The puncture cone also has a second protrusion. When the second protrusion is not in the stop position, the electric motor continues to rotate. When the second protrusion moves to the stop position, it triggers a third proximity switch, disconnecting the secondary circuit and stopping the blade at the shallowest part of the sheath. At this time, if the circuit fails, pushing up the puncture cone sleeve will expose the blade from the sheath, allowing the operator to still perform manual puncture operations. In particular, under normal circuit conditions, if a master switch is set in the primary circuit, the puncture device can be used in both manual and electric modes when the master switch is closed and in manual mode when the master switch is open. The gear switch of the puncture body can be changed before or during puncture.

[0079] This invention employs a proximity switch to control the start of the electric motor, using a power conversion component to drive the puncture cone rod to reciprocate the blade for puncture action, reducing the need for the operator to exert significant force and providing operational convenience. Furthermore, it uses a proximity switch to control the stop of the electric motor, enabling precise control of the blade's stopping position. Finally, it uses a speed control switch to adjust the electric motor's rotation speed, allowing for speed regulation of the puncture process.

[0080] Other embodiments of the invention will readily conceive of those skilled in the art upon consideration of the invention disclosed in the specification and embodiments. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0081] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A puncture device, comprising a puncture cone and a puncture body, the puncture cone comprising a puncture cone rod, a puncture blade, and a puncture blade sheath, the puncture blade being located at the tip of the puncture cone, the puncture blade being connected to the puncture cone rod, and the puncture blade and the puncture cone rod being located within the blade sheath, characterized in that, The puncture body includes an electric motor, a power conversion component, and a first proximity switch; The puncture sheath is provided with at least one trigger structure at its proximal end. When the trigger structure moves to a specific position of the first proximity switch, the first proximity switch closes, the electric motor starts, and the power conversion component pushes the puncture cone rod to perform a puncture action. When the trigger structure leaves the specific position of the first proximity switch, the first proximity switch opens, the electric motor stops working, and the puncture cone rod stops its puncture action. The first proximity switch is a photoelectric switch, and the triggering structure is a trigger rod provided at the proximal end of the piercing knife sheath. The first proximity switch controls the start and stop of the electric motor by sensing the position change of the trigger rod. The puncture cone rod is provided with at least one first protrusion at its proximal end, and the puncture body also includes a second proximity switch; After the first proximity switch is disconnected, when the first protrusion is located at a specific position of the second proximity switch, the second proximity switch is closed, causing the electric motor to continue working until the movement of the piercing knife stops at the first preset position of the piercing knife sheath, at which point the second proximity switch controls the electric motor to stop working. The puncture cone rod is provided with at least one second protrusion at its proximal end, and the puncture body also includes a third proximity switch; After the first proximity switch is disconnected, when the second protrusion is located at a specific position of the third proximity switch, the third proximity switch closes, causing the electric motor to continue working until the movement of the puncture knife stops at the second preset position of the puncture knife sheath. The third proximity switch then controls the electric motor to stop working. The first preset position of the puncture knife sheath is the deepest part of the puncture knife sheath. The second preset position of the puncture knife sheath is the shallowest part of the puncture knife sheath. Both the second and third proximity switches are photoelectric switches.

2. The puncture device as described in claim 1, characterized in that, The puncture device also includes a main switch. When the main switch is closed, the puncture device is in electric mode. When the main switch is open, the puncture device is in manual mode.

3. The puncture device as described in claim 2, characterized in that, The distance between the first protrusion and the second protrusion at the proximal end of the puncture cone is at least greater than the blade length of the puncture knife.

4. The puncture device as described in claim 2, characterized in that, The second proximity switch and the third proximity switch of the puncture body are both located on the same surface of the support of the puncture body.

5. The puncture device as described in claim 2, characterized in that, The puncture body also includes a gear switch, which is used to control the rotation speed of the electric motor, and the gear switch has at least one gear.

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