CN113813027B - An electric puncture device - Google Patents

Abstract

The invention discloses an electric puncture device, which includes a puncture assembly. The puncture assembly includes a knife rod and a blade. The front end of the knife rod is connected to the rear end of the blade. The rear end of the knife rod is connected to the power source. The front end of the conversion component is connected, and also includes: an electric drive component, a power conversion component, the electric drive component is used to generate driving force; the power conversion component is used to transmit the driving force to the puncture component, so that The puncture assembly performs forward and backward reciprocating motion; the rear end of the power conversion assembly is electrically connected to the electric drive assembly, and the front end of the power conversion assembly is connected to the rear end of the puncture assembly. The present invention uses an electric drive component to convert electrical energy into kinetic energy to drive the puncture device to perform puncture movement, thereby avoiding the problems of uneven force and poor puncture effect during manual puncture.

Description

An electric puncture device

Technical field

The invention relates to the field of medical instruments, and in particular to an electric puncture device used in surgical operations.

Background technique

In current minimally invasive surgery, the most important tool is the puncture device, which is used to pierce the abdominal wall and establish a channel between the outside world and the abdominal cavity, so that other minimally invasive surgical instruments can enter the human body cavity through this channel for surgical operations. The structure of the puncture device mainly consists of two parts: a puncture sleeve and a puncture needle. When using it, the puncture needle is first inserted into the puncture sleeve, and then the back end of the puncture sleeve is held by hand to squeeze out the skin with the tip of the front end of the puncture needle. The tissue enters the abdominal cavity.

The main components of laparoscopic puncture needles currently on the market are roughly divided into knife-type and knife-less types. The knife-type type has a stainless steel blade containing a retractable outer protective shell, and the knife-less type has a plastic double-edged blade. The puncture needles used for both types of puncture devices are disposable and cannot be disassembled and replaced. Moreover, the knife-shaped blade is too sharp and can easily damage tissues and affect postoperative healing; the blade-less blade is too blunt and requires too much force for puncture.

When puncturing existing knife-type puncture instruments, the blade is always exposed outside the sheath, and the force of the doctor's arm pushes the knife rod to cut into the skin. There is continuous contact between the blade and the skin, which is relatively static cutting. As shown in Figure 1, the structure of the disposable knife-type puncture device in the prior art includes a sleeve a, a puncture needle b, and a control sheath telescopic assembly c. The control sheath telescopic assembly c is located at the front end of the sleeve a. The front end of the barrel a also includes a plastic sheath d, and the puncture needle b is located in the sleeve a. The puncture needle is composed of a stainless steel core rod and a stainless steel blade e. The stainless steel blade e is adapted to the plastic sheath d. During puncture, the plastic scabbard d retreats due to skin resistance to expose the blade of the stainless steel blade e. Only by continuing to press the puncture needle can the blade of the stainless steel blade e be cut into the skin to achieve puncture. In this structure, the puncture blade is always squeezed in the skin cutting gap, and the relative speed with the skin tissue is small, which is a typical static cutting. Although this structure can reduce the puncture force, a certain amount of pressing force is still required during puncture, making it difficult to puncture. Sometimes it is necessary to rotate the puncture device left and right to make it easier to penetrate the tissue site. If the force is not grasped well, it is easy to reduce the puncture quality, cause fascial damage, and cause problems such as fascial injury and orifice hernia. And the speed of each puncture needle depends on the strength of the doctor's arm and the difficulty of cutting the tissue.

Contents of the invention

The technical problem to be solved by the present invention is to provide an electric puncture device that can ensure puncture quality and solve the problem in the prior art that the puncture device is greatly affected by the doctor's own strength and the difficulty of tissue puncture.

In order to solve the above technical problems, the technical solutions provided by the present invention are as follows:

An electric puncture device includes a puncture component, the puncture component includes a knife bar and a blade, the front end of the knife bar is connected to the rear end of the blade, and is characterized in that it also includes: an electric drive component, a power conversion component,

The electric drive component is used to generate driving force;

The power conversion component is used to transmit the driving force to the puncture component to cause the puncture component to perform forward and backward reciprocating motion;

The rear end of the cutter bar is connected to the front end of the power conversion assembly, and the rear end of the power conversion assembly is electrically connected to the electric drive assembly.

The present invention uses an electric drive component to convert electrical energy into kinetic energy to drive the puncture component of the puncture device to perform puncture movements, thereby avoiding the problems of uneven force and poor puncture effect during manual puncture, and reducing the medical risk of human misoperation. , and increase puncture strength in tissues that are difficult to puncture to reduce patient discomfort.

Further, the power conversion assembly includes a power transmission assembly, a connecting rod,

The power transmission component is connected to the electric drive component and used to transmit the driving force of the electric drive component to the connecting rod;

One end of the connecting rod is connected to the rear end of the cutter bar, and the other end of the connecting rod is connected to the power transmission component for converting the curved reciprocating motion of the power transmission component into a linear reciprocating motion.

By adopting the linkage between the power transmission component and the connecting rod, the present invention converts the kinetic energy of the electric drive component first into a curved reciprocating motion, and then into a linear forward and backward reciprocating motion of the cutter bar, thereby changing the manual operation to automatic execution, which avoids The operator's force is uneven.

Further, the power conversion assembly includes a bracket, the base of the bracket is provided with a bracket through hole, the inner diameter of the bracket through hole is larger than the outer diameter of the knife bar, and the knife rod passes through the bracket through hole. Connect with the connecting rod.

Further, the electric drive assembly includes a battery pack, a loop switch and an electric motor. The battery pack, loop switch and electric motor are electrically connected in sequence to form a closed loop. The loop switch is located on the base of the bracket.

In the present invention, in order to reasonably lay out each component, a bracket is added. The loop switch is located on the bracket, which can fix the loop switch and facilitate the control of the loop switch.

Further, the bracket base is provided with a loop switch slot for accommodating the loop switch, and the loop switch is used to control the operation of the electric motor,

The hollow column side wall of the knife rod sleeve is provided with a knife rod sleeve protrusion for controlling the closing and opening of the circuit switch. When the knife rod sleeve moves to the rear end, the knife rod sleeve The cylinder protrusion contacts the circuit switch, causing the electric motor to start working; when the cutter bar sleeve moves to the front end, the cutter bar sleeve protrusion breaks contact with the circuit switch, causing the The electric motor stops working.

In the present invention, the rear end side wall of the knife rod sleeve is provided with a knife rod sleeve protrusion to control the closing and opening of the circuit switch. There is no need to rely on the operator's external force to control the opening and closing of the circuit switch. The knife rod sleeve is directly connected to the puncture device. During the process of piercing the tissue, the puncture action is started, which brings convenience to the operator.

Further, the power transmission assembly includes a wheel disk, the wheel disk is connected to the electric motor, the wheel disk is provided with a small hole, and the rear end of the connecting rod is provided with a first through hole of the connecting rod, so The first through hole of the connecting rod is fixedly connected to the small hole through a pin.

The rear end of the knife rod is provided with a knife rod through hole, and the front end of the connecting rod is provided with a second through hole of the connecting rod. The knife rod through hole and the second connecting rod through hole are fixedly connected by a pin.

In the present invention, a pin is used to fixedly connect the small hole of the wheel plate to the first through hole of the connecting rod, and the pin is used to fix the through hole of the cutter bar to the second through hole of the connecting rod, thereby building a platform for converting electrical energy into kinetic energy. Automate trocar penetration.

Further, a longitudinal spring is provided between the cutter bar sleeve and the bracket, the cutter bar is sleeved in the longitudinal spring, and the outer diameter of the longitudinal spring is greater than the inner diameter of the through hole of the bracket. The outer diameter of the longitudinal spring is larger than the inner diameter of the bracket through hole and the inner diameter of the cutter bar sleeve. The outer diameter of the longitudinal spring is smaller than the inner diameter of the hollow column of the cutter bar sleeve.

Further, the distance the cutter bar retreats is the distance when the connecting rod moves circumferentially to the highest point of the wheel disc; the distance the tool bar advances is the distance the connecting rod moves circumferentially to the lowest point of the wheel disc. distance at point time.

In the present invention, the forward and backward distances of the cutter bar can be determined by selecting different types of longitudinal springs, making the setting of the forward and backward distances of the cutter bar more flexible.

Furthermore, when the protrusion of the blade sleeve sleeve moves to the point where the circuit switch comes into contact, it is the maximum distance for the blade sheath to retreat, and the distance can ensure that the blade is unsheathed.

Further, an electric motor slot is provided on the side wall of the bracket for accommodating the electric motor. The electric motor slot is a cylindrical structure with an open side wall and is perpendicular to the side wall of the bracket. The electric motor The inner diameter of the groove is larger than the outer diameter of the electric motor.

After adopting such a design, the present invention has at least the following advantages:

(1) The present invention uses an electric drive component to convert electrical energy into kinetic energy to drive the puncture device to perform puncture movements, thereby avoiding the problems of uneven force and poor puncture effect during manual puncture.

(2) The present invention uses the protrusion of the knife rod sleeve to control the closing and opening of the circuit switch. There is no need to rely on the operator's external force to control the opening and closing of the circuit switch. It is activated directly during the process of the puncture device piercing the tissue. The puncture action brings convenience to the operator.

(2) The present invention has a simple structure and good effect.

Description of the drawings

The above is only an overview of the technical solution of the present invention. In order to have a clearer understanding of 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.

Figure 1 is a schematic structural diagram of a puncture device in the prior art;

Figure 2 is a schematic diagram of the overall frame of the sleeveless puncture device in one embodiment of the present invention;

Figure 3 is a schematic diagram of the overall frame of the sleeved puncture device in one embodiment of the present invention;

Figure 4 is a schematic structural diagram of the puncture device in one embodiment of the present invention;

Figure 5 is a schematic disassembly of the puncture device structure in one embodiment of the present invention;

Figure 6 is an exploded view of the partial structure of the puncture device in one embodiment of the present invention;

Figure 7 is an exploded view of the partial structure of the puncture device in one embodiment of the present invention;

Figure 8 is a cross-sectional view of the bracket in one embodiment of the present invention;

Figure 9 is a structural diagram of an electric drive assembly in an embodiment of the present invention;

in,

a is the sleeve, b is the puncture needle, c is the control scabbard telescopic component, d is the plastic scabbard, e is the stainless steel blade, 1 is the knife rod, 11 is the knife rod sleeve, 12 is the knife rod through hole, 111 is The knife rod sleeve is raised, 2 is the blade, 21 is the scabbard, 3 is the connecting rod, 31 is the first through hole of the connecting rod, 32 is the second through hole of the connecting rod, 4 is the bracket, 41 is the bracket through hole, 42 Electric motor slot, 5 is a circuit switch, 6 is an electric motor, 7 is a wheel plate, 71 is a small hole in the wheel plate, 8 is a longitudinal spring, 9 is a transverse spring, and 10 is a lock.

Detailed ways

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a thorough understanding of the invention, and to fully convey the scope of the invention to those skilled in the art.

The end of each component below that is close to the blade is called the front end, and the end that is away from the blade is called the back end.

As shown in Figures 2-9, the embodiment of the present invention provides an electric puncture device, which includes a puncture assembly. The puncture assembly includes a knife bar 1 and a blade 2. The front end of the knife bar 1 is connected to the rear end of the blade 2. The rear end is connected to the front end of the power conversion component, and also includes an electric drive component and a power conversion component.

Electric drive components for generating driving force;

The power conversion component is used to transmit the driving force to the puncture component to make the puncture component perform reciprocating motion;

The rear end of the power conversion component is electrically connected to the electric drive component, and the front end of the power conversion component is connected to the rear end of the puncture component.

In this embodiment, an electric driving component is used to convert electrical energy into kinetic energy to drive the puncture component of the puncture device to perform puncture movements. On the one hand, problems such as uneven force and poor puncture effect during manual puncture are avoided, and labor is reduced. There is a medical risk of misoperation; on the other hand, the puncture device of the present application can increase the puncture force on tissues that are difficult to puncture and reduce the patient's discomfort.

Among them, the tool bar 1 and the blade 2 can be of an integrated structure or a split structure, which is not limited in this embodiment.

For example, in this embodiment, the tool bar 1 and the blade 2 have a split structure. There is a knife rod sleeve 11 on the outside of the knife rod 1, and a knife rod sleeve 21 on the outside of the blade 2. The knife rod sleeve 11 is used to accommodate the knife rod 1, and the scabbard 21 is used to accommodate the blade 2. The front end structural shape of the knife rod 21 is the same as that of the knife rod sleeve 11. The shape of the blade 2 is adapted, and the front end of the scabbard 21 is provided with an outlet slot for the blade 2, and the rear end of the scabbard 21 is fixedly connected to the front end of the knife rod sleeve 11.

The cutter holder sleeve 11 is a hollow tubular structure, and the internal channel facilitates the forward and backward reciprocating motion of the cutter holder 1. The scabbard 21 is a hollow structure, and the internal channel facilitates the forward and backward reciprocating motion of the blade 2. The tool bar 1 drives the blade 2 to perform forward and backward reciprocating motions.

The connection method between the scabbard 21 and the blade sleeve 11 is not limited, and may be in the form of a buckle or a thread, which will not be described in detail here.

In the above solution of this application, the knife bar 1 and the blade 2 are of split structure, and the knife bar 1 can be disassembled, which solves the problem that the existing puncture device has a completely non-detachable structure, the internal knife bar can only be used once, and the entire puncture device needs to be discarded after use. , causing a lot of waste.

In this embodiment, the power conversion component includes a power transmission component, a connecting rod 3,

The power transmission component is connected to the electric drive component and is used to transmit the driving force of the electric drive component to the connecting rod 3;

One end of the connecting rod 3 is connected to the rear end of the cutter bar 1, and the other end of the connecting rod 3 is connected to the power transmission component for converting the curved reciprocating motion of the power transmission component into a linear reciprocating motion.

By adopting the linkage between the power transmission component and the connecting rod, the present invention converts the kinetic energy of the electric drive component first into a curved reciprocating motion, and then into a linear forward and backward reciprocating motion of the cutter bar, thereby changing the manual operation to automatic execution, which avoids The operator's force is uneven.

The power transmission component and the cutter bar 1 are connected through the connecting rod 3, so that the kinetic energy transmitted by the power transmission component is transmitted to the cutter bar 1 through the connecting rod 3, so that the cutter bar 1 can perform puncture movements.

The power conversion assembly also includes a bracket 4. The side wall of the bracket 4 is used to fix the power transmission assembly. The base of the bracket 4 is provided with a bracket through hole 41. The inner diameter of the bracket through hole 41 is larger than the outer diameter of the tool bar 1. 1 is connected to the connecting rod 3 through the bracket through hole 41.

The bracket through hole 41 is located at the center of the base of the bracket 4. The tool bar 1 has a tool bar sleeve 11. The inner diameter of the bracket through hole 41 needs to be smaller than the outer diameter of the tool bar sleeve 11 to prevent the tool bar sleeve 11 from penetrating the bracket. The through hole 41 ensures that only the tool bar 1 can pass through the bracket through hole 41.

In the embodiment of the present invention, the rear end of the cutter holder 1 is provided with a cutter shank through hole 12, and the front end of the connecting rod 3 is provided with a first connecting rod through hole 31. The cutter shank through hole 12 and the first connecting rod through hole 31 are connected by nails. Pin secure connection.

Specifically, other fixing methods can also be used to fix the cutter bar 1 and the connecting rod 3, which will not be described in detail here.

In this embodiment, the cutter holder 1 has a cylindrical structure. The rear end of the cutter holder 1 is provided with a smooth protrusion, and the end face of the protrusion is provided with a cutter holder through hole 12 .

In this embodiment, the electric drive assembly includes a battery pack, a loop switch 5 and an electric motor 6 . The battery pack, the loop switch 5 and the electric motor 6 are electrically connected in sequence to form a closed loop. The switch is located on the base of the bracket 4 .

The base of the bracket 4 is provided with a loop switch slot for fixing the loop switch 5, and the loop switch slot is adapted to the loop switch 5.

In the present invention, in order to reasonably lay out each component, a bracket 4 is added. The loop switch 5 is located on the bracket 4, so that the loop switch 5 can be fixed and conveniently controlled.

The rear end of the cutter holder sleeve 11 is provided with a hollow column, and the side wall of the hollow column is provided with a cutter holder sleeve protrusion 111 for controlling the closing and opening of the circuit switch 5. When the cutter holder sleeve 11 moves toward the rear end When the tool holder sleeve 11 moves to the front end direction, it moves to a certain position until the protrusion 111 of the cutter holder sleeve contacts the circuit switch 5, triggering the circuit switch 5 to close, causing the electric motor 6 to start working. position until the cutter sleeve sleeve protrusion 111 breaks contact with the circuit switch 5, triggering the circuit switch 5 to open, causing the electric motor 6 to stop working.

In this embodiment, by using the cutter sleeve sleeve protrusion 111 to control the closing and opening of the circuit switch 5, there is no need to rely on the operator's external force to control the opening and closing of the circuit switch 5. The puncture action is started, which brings convenience to the operator.

In this embodiment, the power transmission component includes a wheel disk 7. The wheel disk 7 and the electric motor 6 are respectively located on both sides of the side wall of the bracket 4. The side wall of the bracket 4 is provided with an electric motor through hole. The wheel disk 7 is connected to the electric motor 6. The wheel disk 7 is provided with a small hole. The connecting rod 3 is provided with a first through hole 31 of the connecting rod. The first through hole 31 of the connecting rod is fixedly connected to the small hole through a pin.

The rear end of the cutter holder 1 is provided with a cutter holder through hole 12, and the connecting rod 3 is provided with a second connecting rod through hole 32. The cutter holder through hole 12 and the second connecting rod through hole 32 are fixedly connected by a pin.

The wheel disc 7 and the cutter bar 1 are located on the same side of the connecting rod 3.

In this embodiment, the first connecting rod through hole 31 and the second connecting rod through hole 32 of the connecting rod 3 have different sizes. Preferably, the diameter of the first connecting rod through hole 31 of the connecting rod 3 is larger than the diameter of the second connecting rod through hole 32 .

In the present invention, a nail pin is used to fixedly connect the small hole of the wheel disk to the first through hole 31 of the connecting rod, and a nail pin is used to fixedly connect the cutter bar through hole 12 to the second through hole 32 of the connecting rod, thereby establishing a system for converting electrical energy into kinetic energy. platform to automate trocar puncture.

In this embodiment, a longitudinal spring 8 is also provided between the knife rod sleeve 11 and the bracket 41. The outer diameter of the knife rod 1 is smaller than the inner diameter of the longitudinal spring 8. The knife rod 1 is sleeved in the longitudinal spring 8, and the longitudinal spring 8 is The outer diameter is larger than the inner diameter of the bracket through hole. There is a hollow protrusion at the bracket through hole. The outer diameter of the longitudinal spring 8 is smaller than the hollow protrusion. When the longitudinal spring 8 moves as the knife bar 1 moves to the rear end, part of the The longitudinal spring 8 enters the hollow protrusion to prevent the longitudinal spring 8 from continuing to move toward the rear end, thereby positioning the longitudinal spring 8 .

The depth of the hollow column at the rear end of the cutter bar sleeve 11 is less than the height of the longitudinal spring 8, and is used to accommodate part of the longitudinal spring 8 and play a positioning role for the longitudinal spring 8.

In this embodiment, the outer diameter of the longitudinal spring 8 is larger than the inner diameter of the cutter holder sleeve 11 , and the outer diameter of the longitudinal spring 8 is smaller than the outer diameter of the hollow column at the rear end of the cutter holder sleeve 11 .

In this embodiment, the inner diameter of the bracket through hole and the inner diameter of the hollow column at the rear end of the cutter arbor sleeve 11 may be the same or different, and are not limited here.

In this embodiment, the electric puncture device also includes a transverse spring 9 and a lock 10. A lock through hole is provided in the center of the lock 10. A baffle is provided on the side wall of the bracket 4. The transverse spring 9 is located between the baffle and the lock 10. time, used to resist the retraction of the transverse spring 9. When the locking hole coincides with the axial center of the bracket through hole, the transverse spring 9 is in a compressed state, and the knife bar 1 can perform puncture movement. When the locking hole does not coincide with the axial center of the bracket through hole, the transverse spring 9 is in a stretched state. , the tool bar 1 stops the puncture movement.

The inner diameter of the hollow protrusion of the lock through hole may be consistent with or inconsistent with the inner diameter of the bracket through hole, and is not limited here.

In this embodiment, the distance the cutter bar 1 moves to the rear end is the distance when the connecting rod 3 moves circumferentially to the highest point of the wheel disc 7; the distance the tool bar 1 moves to the front end is the distance when the connecting rod 3 moves circumferentially to the wheel disc 7 distance at the lowest point.

In this embodiment, when the blade sleeve protrusion 111 moves to contact the circuit switch 5, it is the maximum distance for the blade sheath 21 to retreat, and this distance can ensure that the blade 2 is unsheathed.

In this embodiment, the telescopic stroke position of the scabbard 21 is in front of the reciprocating stroke position of the blade 2, and there is an overlap of 2 mm to 6 mm between the telescopic stroke position of the scabbard 21 and the reciprocating stroke position of the blade 2. Preferred is 3 mm to 5 mm.

In this embodiment, the wheel disk 7 and the electric motor 6 are respectively located on both sides of the side wall of the bracket 41. The side wall of the bracket 4 is provided with a through hole for the electric motor. The wheel disk 7 is connected to the electric motor 6, and the wheel disk 7 is connected to the cutter bar 1. They are all located on the same side of connecting rod 3.

In this embodiment, an electric motor slot 42 is provided on the base of the bracket 4 for accommodating the electric motor 6 . The electric motor slot 42 is a cylindrical structure with an open side wall, and the inner diameter of the electric motor slot 42 is larger than the outer diameter of the electric motor 6 .

In the embodiment of the present invention, the working process of the electric puncture device is as follows:

Initial state:

The electric motor 6 is installed in the electric motor slot 42 of the bracket 4 and is connected to the wheel disk 7. The small wheel hole 71 of the wheel disk 7 is connected to the first through hole 31 of the connecting rod through a pin, and the second through hole 32 of the connecting rod is connected. It is connected to the cutter shank through hole 12 at the rear end of the cutter shank 1 through a pin. The cutter bar 1 passes through the longitudinal spring 8 before being connected to the connecting rod 3 .

Working status:

When the lock 10 is pressed manually, the transverse spring 9 is compressed, and the elastic hook-like structure on the side of the inner hole of the lock 10 hooks the small protrusion inside the downward shell, and the lock 10 maintains this position. Under the action of the baffle of the bracket 4, the transverse spring 9 will not pop up. The through hole of the lock 10, the through hole 41 of the bracket and the through hole of the knife rod sleeve 11 are coaxial center points. The resistance of the abdominal wall tissue to the sheath 21 during puncture is , the knife rod sleeve 11 together with the scabbard 21 moves toward the rear end. Because the outer diameter of the longitudinal spring 8 is larger than the inner diameter of the bracket through hole 41, the longitudinal spring 8 is prevented from moving, causing the longitudinal spring 8 to compress, and the knife rod sleeve 11 When the cutter holder sleeve protrusion 111 on the rear end side wall moves to the rear end, the cutter holder sleeve protrusion 111 touches the circuit switch 5, causing it to close to form a circuit, thereby turning the electric motor on. 6 starts, the tool bar 1 drives the blade 2 to start reciprocating back and forth. At the same time, the rear end surface of the cutter arbor sleeve 11 resists the elastic hook-shaped structure inside the lock buckle 10 during the backward movement and causes it to trip. The lock buckle 10 partially resets and slides under the restoring elastic force of the transverse spring 9, and the side of the through hole It is blocked by the rear end outer wall of the cutter arbor sleeve 11 and cannot further reset and slide.

When the abdominal wall tissue is pierced, the sheath 21 is no longer subject to tissue resistance. Under the action of the restoring elastic force of the longitudinal spring 8, the knife rod sleeve 11 moves toward the front end. When the protrusion 111 moves to the front with the cutter holder sleeve 11, the protrusion 111 of the cutter holder sleeve moves away from the circuit switch 5, causing it to form an open circuit, thereby causing the electric motor 6 to stop working, and the cutter holder 1 drives the blade 2 to stop. Back and forth reciprocating motion. At the same time, during the forward movement of the tool holder sleeve 11, the rear outer wall no longer resists the side of the through hole in the lock 10, and the lock 10 further slides under the restoring force of the transverse spring 9 until it is completely reset. At this time, the lock 10 The 10 through hole is no longer coaxial with the bracket through hole 41 and the cutter arbor sleeve 11 through hole, and the end face of the through hole resists the rear end face of the cutter arbor sleeve 11 so that it cannot move backward again.

After adopting such a design, the present invention has at least the following advantages:

(1) The present invention uses an electric drive component to convert electrical energy into kinetic energy to drive the puncture device to perform puncture movements, thereby avoiding the problems of uneven force and poor puncture effect during manual puncture.

(2) The present invention uses the protrusion of the knife rod sleeve to control the closing and opening of the circuit switch. There is no need to rely on the operator's external force to control the opening and closing of the circuit switch. It is activated directly during the process of the puncture device piercing the tissue. The puncture action brings convenience to the operator.

(3) The present invention has simple structure and good effect.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Those skilled in the art may make some simple modifications, equivalent changes or modifications using the technical contents disclosed above, and they all fall within the scope of this invention. within the scope of protection of the invention.

Claims (6)

1. The utility model provides an electronic puncture outfit, includes puncture subassembly, puncture subassembly includes cutter arbor and blade, the front end of cutter arbor with the rear end of blade links to each other, its characterized in that still includes: an electric driving component, a power conversion component,

the electric driving assembly is used for generating driving force;

the power conversion assembly is used for transmitting the driving force to the puncture assembly so as to enable the puncture assembly to perform forward and backward reciprocating motion;

the rear end of the cutter bar is connected with the front end of the power conversion assembly, and the rear end of the power conversion assembly is electrically connected with the electric driving assembly;

the power conversion assembly comprises a power transmission assembly, a connecting rod,

the power transmission assembly is connected with the electric driving assembly and is used for transmitting the driving force of the electric driving assembly to the connecting rod;

one end of the connecting rod is connected with the rear end of the cutter bar, and the other end of the connecting rod is connected with the power transmission assembly and used for converting the curve reciprocating motion of the power transmission assembly into linear reciprocating motion;

the power conversion assembly comprises a bracket, a bracket through hole is formed in a base of the bracket, the inner diameter of the bracket through hole is larger than the outer diameter of the cutter bar, and the cutter bar penetrates through the bracket through hole to be connected with the connecting rod;

the electric driving assembly comprises a battery pack, a loop switch and an electric motor, wherein the battery pack, the loop switch and the electric motor are sequentially and electrically connected to form a closed loop, and the loop switch is positioned on the bracket base;

the bracket base is provided with a loop switch groove for accommodating the loop switch, the loop switch is used for controlling the electric motor to work,

the cutter bar is provided with a cutter bar sleeve, the cutter bar is sleeved in the cutter bar sleeve, the side wall of the rear end of the cutter bar sleeve is fixed with a hollow column, the inner diameter of the bracket through hole is smaller than the outer diameter of the cutter bar sleeve,

the side wall of the hollow column of the cutter bar sleeve is provided with a cutter bar sleeve bulge which is used for controlling the closing and opening of the loop switch, and when the cutter bar sleeve moves towards the rear end, the cutter bar sleeve bulge is contacted with the loop switch, so that the electric motor starts to work; when the cutter bar sleeve moves towards the front end, the cutter bar sleeve bulge is disconnected with the loop switch, so that the electric motor stops working.

2. The electric puncture outfit according to claim 1, wherein the power transmission assembly comprises a wheel disc, the wheel disc is connected with the electric motor, a wheel disc small hole is formed in the wheel disc, a connecting rod first through hole is formed in the rear end of the connecting rod, and the connecting rod first through hole is fixedly connected with the wheel disc small hole through a pin;

the rear end of cutter arbor is equipped with a cutter arbor through-hole, the front end of connecting rod is equipped with connecting rod second through-hole, the cutter arbor through-hole with connecting rod second through-hole passes through nail round pin fixed connection.

3. The electric puncture outfit according to claim 2, wherein a longitudinal spring is further arranged between the cutter bar sleeve and the bracket, the cutter bar is sleeved in the longitudinal spring, the outer diameter of the longitudinal spring is larger than the inner diameter of the bracket through hole, the outer diameter of the longitudinal spring is larger than the inner diameter of the cutter bar sleeve, and the outer diameter of the longitudinal spring is smaller than the inner diameter of the hollow column of the cutter bar sleeve.

4. The electric puncture outfit according to claim 3, wherein the distance of the tool bar retreating is the distance when the connecting rod moves to the highest point of the wheel disc in the circumferential direction; the distance that the cutter arbor advances is the distance when connecting rod circumference motion reaches the rim plate nadir.

5. The electric puncture outfit according to claim 4, wherein a sheath is arranged outside the blade, the knife bar sleeve bulge moves to a maximum distance for the sheath to retreat when the loop switch is contacted, and the distance can ensure the blade to come out of the sheath.

6. The electric puncture outfit according to claim 5, wherein an electric motor groove is provided on a side wall of the holder for accommodating the electric motor, the electric motor groove has a cylindrical structure with an opened side wall and is perpendicular to the side wall of the holder, and an inner diameter of the electric motor groove is larger than an outer diameter of the electric motor.