CN219763412U

CN219763412U - Novel neurosurgery retractor

Info

Publication number: CN219763412U
Application number: CN202123324772.5U
Authority: CN
Inventors: 李钟峰
Original assignee: Meizhouwan Vocational Technology College
Current assignee: Meizhouwan Vocational Technology College
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2023-09-29
Anticipated expiration: 2031-12-27

Abstract

A novel neurosurgery retractor comprises an electric push rod, a storage battery, a shell, a charging socket, a force-sensitive resistor, a pusher dog, a handle, a control circuit and a prompting circuit; the two handles are hinged together, the upper ends of the handles are provided with fixing grooves, and the two pusher dogs are respectively hinged in the fixing grooves; the force sensitive resistor is arranged at the inner side end and the outer side end of the fixed groove; two ends of the electric push rod are respectively hinged at the lower ends of the two handles; the storage battery, the charging socket, the control circuit and the prompting circuit are hermetically arranged in the shell and are electrically connected with the force-sensitive resistor and the electric telescopic rod. The novel manual control of opening and closing of the pusher dog is not needed, and the action of the pusher dog can be automatically stopped after the pusher dog contacts with the proper moment of human tissues, so that convenience is brought to a surgeon on the premise of realizing the purpose of intelligent control, unnecessary injury to the tissues of a patient can be effectively prevented, and powerful technical support is provided for smooth operation.

Description

Novel neurosurgery retractor

Technical Field

The utility model relates to the technical field of operation auxiliary equipment, in particular to a novel neurosurgery retractor.

Background

Often, a retractor is required to retract the skin and muscle tissue during neurosurgical skull or spinal surgery to facilitate the procedure. The existing retractors are manufactured by utilizing the lever principle, and when in use, a surgeon holds the rear side ends of two handles of the retractors or releases the two handles, so that the pusher dog at the front end of the front arm of the retractor is opened or closed to complete the retraction of tissues of relevant parts of a patient or complete the retraction action.

The existing retractors are manually operated due to the limitation of the structure, so that inconvenience is brought to operators after long operation time, and more importantly, the opening space and the opening moment of the retractors at the front end pusher dog are completely dependent on the hand experience acting force of the operators, when the acting force is too large, unnecessary injury among tissues of patients can be caused, and correspondingly, the elastic reverse acting force of muscle tissues acts on the hands of the operators through the retractors, so that hand fatigue can be caused to the operators after long time, and more or less adverse effects can be caused to the operators. In view of the foregoing, it would be desirable to provide a new retractor that does not require the operator to apply force to his or her hands and that automatically maintains the distraction gap and the distraction torque.

Disclosure of Invention

In order to overcome the defects that the prior retractor is limited in structure and unnecessary injury among tissues of a patient is caused by the probability of excessive acting force of an operator in actual operation, hand fatigue is caused to the operator after long operation time, and more or less adverse effects are caused to the operation, the utility model provides a novel neurosurgery retractor which does not need to manually control the opening and closing of a pusher dog under the combined action of related mechanisms and circuits, can automatically stop the action of the pusher dog after the pusher dog contacts with proper moment of human tissues, thereby realizing the purpose of intelligent control, bringing convenience to the operator, effectively preventing the tissues of the patient from being unnecessarily injured and smoothly carrying out the operation.

The technical scheme adopted for solving the technical problems is as follows:

the novel neurosurgery retractor comprises an electric push rod, a storage battery, a shell, a charging socket, a force-sensitive resistor, a pusher dog and a handle, and is characterized by further comprising a control circuit and a prompting circuit; the two handles are hinged together, the upper end of each handle is provided with a fixed slot, the number of the pusher dog is two, and the two pusher dogs are respectively hinged in the fixed slots of the two handles; the force sensitive resistor is arranged at the inner side end and the outer side end of the fixed groove; two ends of the electric push rod are respectively hinged to the lower ends of the two handles; the storage battery, the charging socket, the control circuit and the prompting circuit are hermetically arranged in the shell, and the shell is arranged at the side end of one handle; the first path of power output end of the control circuit is electrically connected with the power input end of the prompt circuit, the second path of power output end of the control circuit is electrically connected with the power input end of the electric telescopic rod, and the force sensitive resistor is electrically connected between the two signal input ends of the control circuit in series.

Further, the electric push rod is a reciprocating electric telescopic rod.

Further, the control circuit comprises a controllable silicon, an adjustable resistor, a relay and a resistor which are electrically connected, one end of the resistor is connected with a controllable silicon control electrode, a controllable silicon cathode is connected with a negative electrode power supply input end of the relay, a controllable silicon anode is connected with a positive electrode control power supply input end of the relay, a negative electrode power supply input end of the relay is connected with a negative electrode control power supply input end, and the other end of the resistor is connected with one ends of two adjustable resistors.

Further, the prompting circuit comprises a resistor and a light emitting diode which are electrically connected, and one end of the resistor is connected with the positive electrode of the light emitting diode.

The utility model has the beneficial effects that: this novel operating doctor need not manual operation handle, just can drive two pusher dogs through control switch and fold or pull open the interval, under combined action such as control circuit and force sensitive resistor, after two pusher dogs contact human tissue certain moment, the electric putter can automatic stop work. The utility model provides a convenient operation doctor, and can effectively prevent the tissue of the patient from being hurt, which provides a powerful technical support for the smooth operation. In view of the above-mentioned, it is desirable, the novel method has good application prospect.

Drawings

The utility model will be further described with reference to the drawings and examples.

Fig. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a circuit diagram of the present utility model.

Detailed Description

The novel neurosurgery retractor is shown in fig. 1 and 2, and comprises an electric push rod M, a storage battery G, a shell 1, a charging socket CZ, force sensitive resistors RT and RT1, a pusher dog 2, a handle 3, a control circuit 4 and a prompting circuit 5; the two handles 3 are arranged, the middle part of each handle 3 is provided with an arc-shaped structure 31, the lower ends of the handles 3 are provided with an operating ring 32, the middle parts of the two handles 3 are hinged together, the upper end of each handle 3 is vertically welded with a rectangular fixing groove 33 with an open structure at the upper end, the front and rear ends of the middle parts of the fixing grooves 33 are provided with shaft holes 34, two pulling claws 2 are arranged, the middle parts of the pulling claws 2 are respectively provided with holes, the lower ends of the two pulling claws 2 are respectively sleeved in the fixing grooves 33 at the upper ends of the two handles, two hinging rods 35 respectively penetrate through the front middle shaft holes 34 of the two fixing grooves 33, the middle holes of the two pulling claws 2 (the outer diameters of the pulling claws are smaller than the inner diameters of the fixing grooves), the rear middle shaft holes of the two fixing grooves 33 are fixed, and are further hinged in the two fixing grooves 33 respectively; the two force sensitive resistors RT and RT1 are respectively arranged at the outer side ends of the inner lower part of the fixing groove 33 at the left end and the right end, and strain gauges of the two force sensitive resistors RT and RT1 are contacted with the outer side ends of the two pusher dog 2; the left end of a piston rod and the right end of a cylinder body of the electric push rod M are respectively hinged to the middle parts (left high and right low) of the front lower ends of the two handles 3; the storage battery G, the charging socket CZ, the control circuit 4 and the prompt circuit 5 are hermetically arranged on a circuit board in the shell 1, and the shell 1 is welded on the lower right side of the right-end handle 3.

As shown in fig. 1 and 2, the housing 1, the handle 3, the finger 2, the fixing groove 33, the collar 32, the hinge rod 35, the piston rod of the electric telescopic rod M, the cylinder, and the like are all made of stainless steel. The electric push rod M is a finished product of a reciprocating electric telescopic rod with working voltage of direct current of 6V, and the stroke of a piston rod of the electric push rod M is 5 cm; battery G is a lithium battery of model 6V/10 Ah; the charging CZ is a coaxial power socket, the power switch SK is a toggle power switch, and the power switch SK handle and the charging socket CZ jack are respectively positioned outside two openings at the front end of the shell 1. The control circuit comprises a silicon controlled rectifier VS, adjustable resistors RP and RP1, a relay K and a resistor R1 which are connected through wiring of a circuit board, one end of the resistor R1 is connected with a control electrode of the silicon controlled rectifier VS, a cathode of the silicon controlled rectifier VS is connected with a negative power input end of the relay K, an anode of the silicon controlled rectifier VS is connected with a positive control power input end of the relay K, a negative power input end of the relay K is connected with a negative control power input end, and the other end of the resistor R1 is connected with one ends of the two adjustable resistors RP and RP 1. The prompting circuit comprises a resistor R2 and a light emitting diode VL which are connected through circuit board wiring, wherein one end of the resistor R2 is connected with the positive pole of the light emitting diode VL (the light emitting surface is positioned outside the front end of the shell).

As shown in fig. 1 and 2, two poles of a storage battery G and two ends of a charging socket CZ (when the storage battery G is not powered, an external 6V power charger plug can be inserted into an opening of the charging socket CZ to charge the storage battery G), two power input ends 1 and 4 pins of a power switch SK are respectively connected by wires, first power output ends 3 and 6 pins of the power switch SK and positive and negative power input ends of an electric telescopic rod M are respectively connected by wires, second power output ends 2 and 5 pins of the power switch SK and power input ends of a control circuit are respectively connected by wires, a normally open contact end and a negative power input end of a relay K of the control circuit are respectively connected by wires, the other end of a power input end resistor R2 of a prompting circuit and the negative electrode of a light emitting diode VL of the control circuit are respectively connected by wires, two normally closed contact ends of the relay K of the control circuit are respectively connected by wires, and two power sensitive resistors RT1 and RT are respectively connected between the other ends of the two signal input ends of the control circuit and the controllable resistors RP1 and the controllable resistor RP.

The other application methods of the present utility model, as shown in figures 1 and 2, are fully compatible with the conventional retractors of the prior art and are ready for use after conventional sterilization. When the novel operation is finished and two handles 3 are needed to drive the pusher dog 2 to fold, an operator stirs the handle of the power switch SK leftwards, so that 3, 6 feet, 1 and 4 feet of the power switch SK are respectively communicated, a positive pole and a negative pole electricity-obtaining piston rod of the electric telescopic rod M drives the lower end of the left end handle 3 to move leftwards, the lower end of the right end handle 3 is driven to move rightwards (the middle parts of the two handles move along a hinging point), and thus the distance between the two pusher dogs 2 at the upper ends of the two handles is reduced, and the power switch SK is turned off after the two pusher dogs are in place. When two fingers 2 are required to retract between corresponding tissues of a patient, a worker dials the handle of the power switch SK rightward, so that pins 1 and 4, pins 2 and 5 of the power switch SK are respectively communicated, and the control circuit is electrically operated. After the control circuit is electrified and works, the control power input end and the normally closed contact end of the relay K are closed in the initial state, the two poles of the 6V power supply can enter the negative and positive pole power input ends of the electric telescopic rod M respectively through the two control power input ends and the two normally closed contact ends of the relay K, after the electric telescopic rod M is electrified, the piston rod of the electric telescopic rod M drives the lower end of the left end handle 3 to move to the right side and drives the lower end of the right end handle 3 to move to the left side (the middle parts of the two handles move along the hinging point), so that the distance between the two pusher dogs 2 at the upper ends of the two handles is enlarged to prepare the patient tissues for operation (the power switch SK. is closed after the two pusher dogs 2 are in place), the lower end of the outer side of the electric telescopic rod M is gradually contacted with a force-sensitive resistor RT1 and RT (respectively sleeved in a miniature rubber sleeve), the moment of a strain gauge is gradually increased, the force of a finger contacted with human tissues is relatively small, the resistance value of the force-sensitive resistor RT or RT1 is relatively large, thus, the control of a 6V power supply entering the silicon controlled rectifier VS after the voltage reduction and current limiting of the 6V power supply is conducted by the force-sensitive resistor RT or RT1 and the adjustable resistor RP1 or RP and the resistor R1 is extremely lower than 0.7V, the silicon controlled rectifier VS is not triggered to be conducted, then a relay K is not powered on, and the electric telescopic rod M continuously drives the finger 2 to move, when the force of the finger contacted with the human tissues is relatively large, the resistance value of the force-sensitive resistor RT or RT1 is relatively small, thus, the control of the 6V power supply entering the silicon controlled rectifier VS after the voltage reduction and current limiting of the 6V power supply is extremely higher than 0.7V, the silicon controlled rectifier VS is triggered to be conducted, and then the relay K is electrically sucked to the control power supply input end and a normally-closed contact end of the relay K is opened, the electric telescopic rod M is no longer in operation. In this novel, when relay K gets the electricity actuation back, the suggestion circuit can get electric work, and 6V power through resistance R2 step down current-limiting entering emitting diode VL anodal power input, emitting diode VL luminous visual cue operating doctor thumb 2 adjusts in place can close switch SK and perform the operation. Through the above-mentioned, this novel operating doctor need not manual operation handle, just can drive two pusher dogs through control switch and close or pull open the interval, under combined action such as control circuit and force sensitive resistor, after two pusher dogs contact human tissue certain moment, the electric putter can automatic stop work. The utility model provides a convenient operation doctor, and can effectively prevent the tissue of the patient from being hurt, which provides a powerful technical support for the smooth operation. When the two fingers 2 stir animal tissues to a proper moment, the resistance values of the adjustable resistors RP1 and RP are respectively adjusted, the resistance values of the adjustable resistors RP1 and RP are just adjusted to be in place after the controllable silicon VS is turned on, then the resistance values of the adjustable resistors RP1 and RP are tested by disconnecting the power supply, and the resistance values of the adjustable resistors RP1 and RP are directly adjusted to be in place before the mass production. In FIG. 2, the silicon controlled rectifier VS is a plastic package unidirectional silicon controlled rectifier of model MCR100-1, the resistance value of the resistor R1 is 1K, and the resistance values of the adjustable resistors RP1 and RP are 4.7M (the embodiment is adjusted to 1.2M); the electric push rod M is a finished product of a reciprocating electric push rod with the model LYX-6V and has the working voltage of direct current 6V; the resistance value of the resistor R2 is 600 omega; the light emitting diode VL is a red light emitting diode; the relay K is a DC6V micro relay; the model of the force sensitive resistor RT and RT1 is IMS-C04N.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is limited to the details of the foregoing exemplary embodiments, and that the utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present disclosure describes embodiments, the embodiments do not include only a single embodiment, and this description is for clarity only, and those skilled in the art should consider the disclosure as a whole, and embodiments may be suitably combined to form other embodiments that will be understood by those skilled in the art.

Claims

1. The novel neurosurgery retractor comprises an electric push rod, a storage battery, a shell, a charging socket, a force-sensitive resistor, a pusher dog and a handle, and is characterized by further comprising a control circuit and a prompting circuit; the two handles are hinged together, the upper end of each handle is provided with a fixed slot, the number of the pusher dog is two, and the two pusher dogs are respectively hinged in the fixed slots of the two handles; the force sensitive resistor is arranged at the inner side end and the outer side end of the fixed groove; two ends of the electric push rod are respectively hinged to the lower ends of the two handles; the storage battery, the charging socket, the control circuit and the prompting circuit are hermetically arranged in the shell, and the shell is arranged at the side end of one handle; the first path of power output end of the control circuit is electrically connected with the power input end of the prompt circuit, the second path of power output end of the control circuit is electrically connected with the power input end of the electric telescopic rod, and the force sensitive resistor is electrically connected between the two signal input ends of the control circuit in series.

2. The novel neurosurgical retractor of claim 1 wherein the electric push rod is a reciprocating electric telescopic rod.

3. The novel neurosurgical retractor of claim 1 wherein the control circuit comprises an electrically connected thyristor, an adjustable resistor, a relay and a resistor, wherein one end of the resistor is connected with the thyristor control electrode, the thyristor cathode is connected with the negative power input end of the relay, the thyristor anode is connected with the positive control power input end of the relay, the negative power input end of the relay is connected with the negative control power input end, and the other end of the resistor is connected with one end of the two adjustable resistors.

4. The novel neurosurgical retractor of claim 1, wherein the prompting circuit comprises an electrically connected resistor and a light emitting diode, and wherein one end of the resistor is connected to the positive electrode of the light emitting diode.