CN114176730A - Epidural anesthesia puncture auxiliary device - Google Patents
Epidural anesthesia puncture auxiliary device Download PDFInfo
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- CN114176730A CN114176730A CN202111594073.4A CN202111594073A CN114176730A CN 114176730 A CN114176730 A CN 114176730A CN 202111594073 A CN202111594073 A CN 202111594073A CN 114176730 A CN114176730 A CN 114176730A
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- 238000002692 epidural anesthesia Methods 0.000 title claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000012544 monitoring process Methods 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims description 21
- 239000013589 supplement Substances 0.000 claims description 7
- 238000009825 accumulation Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 210000001951 dura mater Anatomy 0.000 abstract description 21
- 239000003570 air Substances 0.000 description 127
- 206010002091 Anaesthesia Diseases 0.000 description 11
- 230000037005 anaesthesia Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 230000001502 supplementing effect Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 210000003041 ligament Anatomy 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000036407 pain Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 241000252254 Catostomidae Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000001949 anaesthesia Methods 0.000 description 1
- 230000003444 anaesthetic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011437 continuous method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000003589 local anesthetic agent Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 210000000278 spinal cord Anatomy 0.000 description 1
- 210000000273 spinal nerve root Anatomy 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3401—Puncturing needles for the peridural or subarachnoid space or the plexus, e.g. for anaesthesia
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
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- Animal Behavior & Ethology (AREA)
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses an epidural anesthesia puncture auxiliary device which comprises a mounting seat provided with an outer needle tube, wherein a needle core is arranged in the needle tube in a matching manner, the epidural anesthesia puncture auxiliary device also comprises a handle, a controller and a pressure supply source, the front end of the handle is connected with the mounting seat, a retraction control mechanism is arranged in the handle, the retraction control mechanism comprises a piston plate, a pressure monitoring assembly, an air supply valve group and an air escape valve, a piston cavity is arranged in the middle of the handle, the piston plate is arranged in the piston cavity in a matching manner and divides the piston cavity into a front control cavity and a rear control cavity in a sealing manner, and the pressure intensity in the front control cavity and the rear control cavity is greater than the pressure intensity of outside air; the invention has unique structure and convenient use, can effectively solve the problem that the existing dural puncture needle cannot repeatedly store power, and can also effectively solve the problem that the existing dural puncture needle has the risk of puncturing dura mater when pressure is applied by puncture.
Description
Technical Field
The invention belongs to the technical field of epidural anesthesia puncture, and particularly relates to an epidural anesthesia puncture auxiliary device.
Background
Epidural anesthesia refers to epidural space block anesthesia, i.e., local anesthetic is injected into the epidural space to block spinal nerve root and temporarily paralyze the innervated area, which is called epidural space block anesthesia, or epidural space block for short. Depending on the mode of administration, a single-dose method and a continuous method can be classified. The puncture position can be divided into high position, middle position, low position and sacral canal block.
When epidural puncture is carried out, the puncture depth of the epidural puncture needle is operated by the experience of an anesthesiologist, whether the needle point of the external mold puncture needle reaches an epidural space or not is judged according to the falling feeling during puncture, and whether the epidural puncture needle is stressed or not is determined, but because the hand feeling sensitivity and the reaction coordination speed of each person are different, when the epidural space is sensed or found to be reached, the puncture may still advance, the dura mater is easy to puncture, even the spinal cord is injured, and serious consequences are caused; along with the progress of science and technology, a dura mater puncture needle with retraction function appears in the market, the position of the needle core of the dura mater puncture needle is fixed by the electromagnetic valve, the electromagnetic valve is controlled by the pressure sensor, when the puncture is completed, the pressure sensor detects the pressure loss caused by falling into the air, the electromagnetic valve is controlled to be unlocked, the needle core is pushed by the spring to retract into the outer needle tube, and the sharp end of the needle core is prevented from directly contacting with the dura mater spinalis due to untimely retraction.
However, the top spring of the existing dural puncture needle can only accumulate force once, when the pressure applied by the anesthesia doctor is too large, if the pressure applied degree is adjusted, the electromagnetic valve is triggered to unlock, the needle core retracts, the puncture fails, the dural puncture can be carried out again after the dural puncture needle needs to be replaced, and the pain of a patient is increased; in addition, when the existing dural puncture needle with the retraction function is actually used, because the extension of the spring pushes the needle core to retract and needs a certain time, when the puncture pressure applied by an anaesthetist in the puncture process is overlarge, the reaction retraction time after puncture is shorter than the time needed by the retraction of the spring extension push needle core, so that the risk that the sharp end of the needle core point punctures the dura mater is still existed.
Disclosure of Invention
Aiming at the defects and problems of the existing epidural puncture needle, the invention provides an epidural anesthesia puncture auxiliary device which has a unique structure and is convenient to use, and not only can effectively solve the problem that the existing epidural puncture needle cannot repeatedly store power, but also can effectively solve the problem that the existing puncture needle has the risk of puncturing the dura mater when the pressure applied by puncture is large.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an epidural anesthesia puncture auxiliary device, includes the mount pad of installing outer needle tubing, and matches in the needle tubing and install the nook closing member, still includes handle, controller and pressure supply source, the handle front end is connected with the mount pad, and is equipped with the control mechanism that contracts in the handle, it includes piston plate, pressure monitoring subassembly, air feed valves and release valve to contract control mechanism, the handle middle part is equipped with the piston chamber, the piston plate matches and installs in the piston chamber to divide piston chamber seal into two control chambers around, and the pressure all is greater than ambient air pressure in front control chamber and the back control chamber; the pressure monitoring assembly is connected with the controller and is used for detecting the pressure intensity in the front control cavity and the rear control cavity; the front control cavity and the rear control cavity are respectively connected with a pressure supply source through corresponding air supply valves in the air supply valve group, the air release valve is communicated with the rear control cavity, the air supply valve group and the air release valve are both connected with the controller, and the started controller can control the opening and closing of the air supply valve and the pressure release valve in the air supply valve group according to the pressure intensity in the two control cavities; be equipped with interface channel in the handle of piston chamber front side, both ends communicate with needle tubing and transition chamber respectively around interface channel, sealed slidable mounting has the connecting rod in the interface channel, and the tail end of connecting rod extends into the front control intracavity and is connected with the piston plate is perpendicular, the nook closing member tail end passes outer needle tube and extends into the transition intracavity to be connected perpendicularly with the connecting rod front end.
The middle part of mount pad is opened along the axial has the shaft hole that runs through the mount pad, and the tail end and the coaxial axle center sealing connection of handle front end of mount pad, the fixed suit of near-end of outer needle tubing is in the shaft hole of mount pad, and the sharp end of the interior nook closing member of outer needle tubing stretches out outer needle tubing forward.
The handle is characterized in that an inner thread groove is formed in the middle of the front end face of the handle in the axial direction, an outer thread table matched with the inner thread groove is arranged in the middle of the rear end face of the mounting seat in the axial direction, the outer thread table is sleeved in the inner thread groove in the front end of the handle in a matched mode, the handle is connected with the mounting seat in a sealed mode, and a shaft hole in the mounting seat penetrates through the outer thread table backwards.
A plurality of annular grooves are formed in the inner annular wall of the connecting channel adjacent to the piston cavity at intervals along the axis, sealing rings are installed in the annular grooves in a matched mode, and after the connecting rod is installed in the connecting channel in a matched mode, the sealing rings in the annular grooves can be deformed by the connecting rod in an extruded mode.
The handle is internally provided with a pressure regulating channel and an air supplementing channel, the air supply valve group comprises a retraction air supply valve and an accumulation air supply valve, and the retraction air supply valve and the accumulation air supply valve are both in control connection with the controller; the front control cavity is connected with a retraction air supply valve, and the other end of the air supply valve is connected with a pressure supply source; the rear control cavity is connected with the power storage air supply valve through a pressure regulating channel, and the other end of the power storage air supply valve is connected with a pressure supply source.
And the front cavity wall of the front control cavity is provided with an air supplementing port communicated with an air supplementing channel along the axial direction, and the other end of the air supplementing channel is connected with a pressure supply source through a retraction air supply valve.
And a pressure regulating port communicated with the pressure regulating channel is axially formed in the rear cavity wall of the rear control cavity, and the other end of the pressure regulating channel is connected with a pressure supply source through a power storage air supply valve.
And a pressure relief valve hole communicated with the pressure regulating channel is formed in the side wall of the adjacent side of the handle and the pressure regulating channel, and the pressure relief valve is plugged and installed in the pressure relief valve hole and connected with the controller.
The pressure intensity in the front control cavity is the same as that in the rear control cavity in an unused state, the plunger resistance can be used for pushing the piston plate to move backwards to trigger the controller to start when puncturing, the started controller can control the opening and closing of the air supply valve and the pressure release valve in the air supply valve bank according to the pressure intensities in the two control cavities, and when the controller detects that the pressure intensity of air pressure in the rear control cavity is greater than the puncturing pressure intensity of the rear control cavity preset by the controller, the controller can send a prompt tone.
The pressure supply source comprises a high-pressure bottle body, high-pressure air is stored in the high-pressure bottle body, the exhaust end of the high-pressure bottle body is connected with the air supply valve, and the pressure intensity of the high-pressure air in the high-pressure bottle body is greater than the air pressure intensity in the piston cavity.
The invention has the beneficial effects that: the epidural anesthesia puncture auxiliary device provided by the invention has a unique structure, not only comprises a mounting seat provided with an outer needle tube, but also comprises a handle, a controller and a pressure supply source, wherein the front end of the handle is connected with the mounting seat, a needle core is arranged in the needle tube in a matching way, the tail end of the needle core penetrates through the mounting seat, extends into the handle and is connected with a backtracking control mechanism in the handle, the backtracking control mechanism comprises a piston plate, a pressure monitoring component, an air supply valve group and an air escape valve, a piston cavity is arranged in the middle of the handle, the piston plate is arranged in the piston cavity in a matching way and divides the piston cavity into a front control cavity and a rear control cavity in a sealing way, and the needle core is connected with the piston plate; the pressure monitoring assembly is connected with the controller and is used for detecting the pressure intensity in the front control cavity and the rear control cavity; the front control cavity and the rear control cavity are respectively connected with a pressure supply source through corresponding air supply valves in the air supply valve group.
When using, come the back of returning of control nook closing member through two control intracavity atmospheric pressures around the control piston board, the speed that the nook closing member returned has been improved, and when anesthesia personnel handheld handle applied pressure was too big at the puncture in-process, the controller can send the prompt tone, and control the nook closing member and return, and pressurize and reset, give anesthesia personnel and remind, thereby can effectively solve the problem that current dura mater pjncture needle can not hold up the power repeatedly, and can also effectively solve the problem that has the dura mater puncture needle and punctures the dura mater risk because of puncturing when exerting pressure is big.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic view of the internal structure of the handle of the present invention.
Fig. 3 is a schematic view of the structure of the mounting seat of the present invention.
FIG. 4 is a block diagram of the connection between the controller and various components of the present invention.
FIG. 5 is a schematic view of the present invention venting using excessive force application retraction.
Fig. 6 is a schematic view of the puncture retraction process of the present invention.
Fig. 7 is a schematic perspective view of the opening position of the guide cavity according to the present invention.
FIG. 8 is a schematic view showing the positional relationship between the guide bar and the air guide groove according to the present invention.
FIG. 9 is a schematic view of the outer needle cannula retraction mechanism of the present invention.
FIG. 10 is a schematic view of the present extension needle retraction process.
Fig. 11 is a schematic view of the mounting position of the handle and the auxiliary stand of the present invention.
FIG. 12 is a schematic view of the structure of the auxiliary stand according to the present invention.
FIG. 13 is a schematic view of the handle and bracket set of the present invention in a mated relationship.
FIG. 14 is a schematic view of the position of the reciprocating coupling assembly of the present invention.
FIG. 15 is a schematic view of a reciprocating coupling assembly of the present invention.
Reference numbers in the figures: 1 is a mounting seat, 11 is a shaft hole, 12 is an external thread table, 13 is a second piston cavity, 131 is a front cavity, 132 is a rear cavity, 14 is a first channel, 15 is a second channel, 2 is an external needle tube, 3 is a handle, 31 is an internal thread groove, 32 is a piston cavity, 321 is a front control cavity, 322 is a rear control cavity, 33 is a connecting channel, 331 is an annular groove, 332 is a sealing ring, 34 is a pressure regulating channel, 35 is an air replenishing channel, 36 is a mounting groove, 37 is a pressure relief valve hole, 38 is a guide cavity, 381 is an air guide groove, 39 is a guide column, 4 is a pressure supply source, 5 is a needle core, 61 is a piston plate, 62 is an air supply valve block, 621 is a retraction air supply valve, 622 is an accumulation air supply valve 63 is an air release valve, 64 is a connecting rod, 71 is a second retraction air supply valve, 72 is a second retraction air supply valve, 73 is a needle tube piston plate, 8 is an auxiliary support, 81 is a support sleeve, 811 is a thread hollow hole, 82 is an electric push rod, 821 is telescopic end, 83 is sliding bush, 84 is fixing bolt, 85 is landing leg, 86 is absorption component, 91 is connecting seat, 92 is driving lever, 93 is thrust bearing, 94 is guide frame, 95 is platform plate, 96 is reciprocating motor.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example 1
The epidural puncture needle with the retraction function is available in the market, the needle core position of the epidural puncture needle is fixed by the electromagnetic valve, the electromagnetic valve is controlled by the pressure sensor, when the puncture is completed, the pressure sensor detects the pressure loss caused by falling to the air, the electromagnetic valve is controlled to be unlocked, the needle core is pushed by the spring to retract into the outer needle tube, and the sharp end of the needle core is prevented from directly contacting with the dura mater spinalis when the retraction force is not timely; however, the top spring of the existing dural puncture needle can only accumulate force once, when the pressure applied by the anesthesia doctor is too large, if the pressure applied degree is adjusted, the electromagnetic valve is triggered to unlock, the needle core retracts, the puncture fails, the dural puncture can be carried out again after the dural puncture needle needs to be replaced, and the pain of a patient is increased; in addition, when the existing dural puncture needle with the retraction function is actually used, because the extension of the spring pushes the needle core to retract and needs a certain time, when the puncture pressure applied by an anaesthetist in the puncture process is overlarge, the reaction retraction time after puncture is shorter than the time needed by the retraction of the spring extension push needle core, so that the risk that the sharp end of the needle core point punctures the dura mater is still existed.
To the above-mentioned problem of telling, this embodiment provides an epidural anesthesia puncture auxiliary device, and the device unique structure, convenient to use not only can effectively solve current dura mater pjncture needle and can not hold the problem of power repeatedly, but also can effectively solve current pjncture needle and exert the problem that the pressure exists when big and punctures the dura mater risk because of the puncture.
As shown in fig. 1-6, the epidural anesthesia puncture assisting device provided in this embodiment includes not only the mounting seat 1 mounted with the outer needle tube 2, but also the handle 3, the controller and the pressure supply source 4, the outer needle tube 2 is mounted in the mounting seat 1 in various ways, as shown in fig. 3, the middle part of the mounting seat 1 is axially provided with a shaft hole 11 penetrating through the mounting seat, the proximal end of the outer needle tube 2 is fixedly sleeved in the shaft hole 11 of the mounting seat, and the outer needle tube is internally and fittingly mounted with the needle core 5, and the sharp end of the needle core 5 extends forward out of the outer needle tube.
As shown in fig. 2, the front end of the handle 3 is hermetically connected with the mounting seat 1, and the handle 3 and the mounting seat are coaxially arranged; the handle can be connected with the mounting seat in various ways, such as: the middle part of the front end face of the handle 3 is provided with an internal thread groove 31 along the axial direction, the middle part of the rear end face of the mounting seat 1 is provided with an external thread table 12 matched with the internal thread groove along the axial direction, the external thread table is matched and sleeved in the internal thread groove at the front end of the handle, so that the handle is connected with the mounting seat in a sealing way, and a shaft hole on the mounting seat penetrates through the external thread table along the backward direction.
A retraction control mechanism is arranged in the handle at the rear side of the internal thread groove 31 in a matching manner, the retraction control mechanism comprises a piston plate 61, a pressure monitoring assembly, an air supply valve group 62 and an air release valve 63, a cylindrical piston cavity 32 is arranged in the middle of the handle 3 along the axial direction, the piston plate 61 is installed in the piston cavity in a matching manner and divides the piston cavity into a front control cavity and a rear control cavity in a sealing manner, the air pressure intensity in the front control cavity 321 and the rear control cavity 322 is greater than the external air pressure intensity, and the piston plate 61 can slide towards the control cavity at the side with smaller air pressure; the pressure monitoring assembly is arranged in the handle, is connected with the controller and is used for detecting the real-time pressure intensity in the front control cavity and the rear control cavity.
A connecting channel 33 is arranged in the handle at the front side of the piston cavity 32, the connecting channel 33 and the outer needle tube 2 are coaxially arranged, the front end and the rear end of the connecting channel 33 are respectively connected with the outer needle tube 2 and the piston cavity 32, a connecting rod 64 is arranged in the connecting channel 33 in a sealing and sliding mode, the tail end of the connecting rod 64 extends into the front control cavity 321 to be vertically connected with the piston plate 61, the tail end of the needle core 5 penetrates through the outer needle tube to extend into the connecting channel and is vertically connected with the front end of the connecting rod 64, and when the piston plate moves back and forth in the piston cavity, the needle core can be pulled to move back and forth in the outer needle tube through the connecting rod.
Further the inner ring wall of the connecting channel 33 adjacent to the piston cavity is provided with a plurality of annular grooves 331 at intervals along the axis, the annular grooves are internally provided with sealing rings 332 in a matching way, and after the connecting rod is arranged in the connecting channel in a matching way, the sealing rings in the annular grooves can be deformed by the extrusion of the connecting rod, so that the sealing strength between the connecting rod and the connecting channel is further enhanced.
Preceding control chamber 321 is connected with the pressure supply source 4 through corresponding the air feed valve respectively in air feed valves 62 with back control chamber 322, and snuffle 63 and back control chamber intercommunication, and air feed valves and snuffle all are connected with the controller, and the controller can be according to opening and close of air feed valve and relief valve in the two control intracavity pressure control air feed valves, specifically:
as shown in fig. 2, a pressure regulating channel 34 and an air supplementing channel 35 are provided in the handle, the air supply valve group 62 includes a retraction air supply valve 621 and an accumulated force air supply valve 622, both the retraction air supply valve 621 and the accumulated force air supply valve 622 are installed in the handle 3, and are in control connection with the controller, specifically:
two mounting grooves 36 are axially formed at the tail end of the handle 3, and the retracting air supply valve 621 and the power storage air supply valve 622 are respectively mounted in the corresponding mounting grooves 36 and are in control connection with a controller, and the controller can control the opening and closing of the retracting air supply valve 621 and the power storage air supply valve 622.
An air supplement port communicated with the air supplement channel 35 is axially arranged on the front cavity wall of the front control cavity 321, and the other end of the air supplement channel 35 is connected with the pressure supply source 4 through a retraction air supply valve 621; the rear cavity wall of the rear control cavity 322 is provided with a pressure regulating port communicated with the pressure regulating channel 34 along the axial direction, and the other end of the pressure regulating channel 34 is connected with a pressure supply source through a power storage air supply valve 622; the pressure supply source 4 comprises a high-pressure bottle body, high-pressure air is stored in the high-pressure bottle body, the exhaust end of the high-pressure bottle body is respectively connected with the retraction air supply valve and the power storage air supply valve through a high-pressure air pipe, and the pressure intensity of the high-pressure air in the high-pressure bottle body is greater than the air pressure intensity in the piston cavity; when the controller controls the retraction gas supply valve or the power accumulation gas supply valve to be opened, high-pressure gas in the high-pressure bottle body enters the corresponding control cavity through the corresponding channel, and therefore the pressure intensity in the corresponding control cavity is improved.
The pressure monitoring assembly can be arranged in various ways, such as: the pressure monitoring assembly comprises a supporting air pressure sensor and a retracting air pressure sensor, the supporting air pressure sensor and the retracting air pressure sensor are respectively arranged in the pressure adjusting channel, and the supporting air pressure sensor and the retracting air pressure sensor are both connected with the controller and used for monitoring the air pressure intensity in the corresponding channels.
A pressure relief valve hole 37 communicated with the pressure regulating channel 34 is formed in the side wall of the handle 3 adjacent to the pressure regulating channel 34, and a pressure relief valve 63 is plugged and installed in the pressure relief valve hole and connected with the controller; as shown in fig. 2, the pressure in the front installation cavity is the same with the pressure in the back installation cavity in the handle before using, this moment the piston plate is in the state of stewing, when the anesthetic holds the handle to puncture, the sharp end of the nook closing member of nook closing member can receive the resistance of ligament tissue and order about the nook closing member to inwards retract partially, and order about the piston plate through the connecting rod backward movement compression back control cavity space, make back control intracavity pressure increase, thereby start the controller, the controller after starting can correspond the opening and closing of air feed valve and relief valve according to preceding control cavity and back control intracavity pressure control, specifically:
as shown in fig. 5, in the puncturing process, when the controller detects that the pressure of the air pressure in the rear control cavity is greater than the puncturing pressure of the rear control cavity preset by the controller, namely, when the puncturing pressure applied by an anesthesiologist is too high, the controller can control the air release valve to open at first, so that the air pressure in the rear control cavity is instantly reduced to be the same as the external atmospheric pressure, and therefore the high-pressure air in the front control cavity can instantly presume that the piston plate drives the needle core to move backwards, the sharp end of the needle core retracts into the outer needle tube, and a prompt tone is sent out to remind the anesthesiologist of applying too high pressure to take up the pressure, so that ligament damage caused by too high pressure is avoided; then the controller can control the air release valve to close, open the power storage air supply valve, supplement high-pressure air to the back control cavity, and when the air pressure intensity in the back control cavity and the air pressure intensity in the front control cavity reach the intensity required by the puncture, the controller closes the power storage air supply valve, and at the moment, an anaesthetist can continue to hold the handle to puncture the outer mold.
As shown in fig. 6, when the sharp end of the stylet pierces the ligament, the stylet will lose resistance instantaneously, and the piston plate will be reset instantaneously by the pressure in the control chambers at both sides after losing the thrust force, the pressure intensity in the front control chamber can be instantly increased to the original pressure intensity, the pressure intensity in the rear control chamber can be instantly decreased to the original pressure intensity, when the control detects that the air pressure intensity in the front control cavity rises to exceed the puncture pressure intensity of the front control cavity preset by the controller through the pressure monitoring assembly, the controller can control the pressure relief valve and the retraction pressure supply and pressure generation valve to be opened instantly, at the moment, because the air pressure in the rear control cavity is instantly reduced to be the same as the external atmospheric pressure, therefore, high-pressure air entering the front control cavity through the retraction pressure supply valve can instantly push the piston plate to move backwards to the limit position, so that the sharp end of the needle core instantly retracts into the outer needle tube, and the sharp end of the needle core is prevented from leaking and piercing or damaging a dura mater; then the handle and the mounting seat are rotated reversely to be separated, when the handle is driven backwards to be separated from the mounting seat, the needle core can be pulled out from the mounting seat through the connecting rod, and therefore an anaesthesia person can directly perform subsequent puncture inspection operation.
Compare with the dura mater pjncture needle of current through solenoid valve control top spring ejector pin core retraction formula, the epidural anesthesia puncture auxiliary device structure that this embodiment provided is unique, when using, the back of returning of the nook closing member is controlled to atmospheric pressure through two control intracavity fronts and backs of control piston board, the speed that the nook closing member returns has been improved, and when anesthesia personnel handheld handle applied pressure was too big in puncture process, the controller can send the prompt tone, and control the nook closing member returns, and pressurize and reset, give anesthesia personnel and remind, thereby can effectively solve the problem that current dura mater pjncture needle can not hold the power repeatedly, and can also effectively solve current pjncture needle and have the problem of puncturing dura mater risk because of the puncture applies pressure when big.
Example 2
As shown in fig. 7-8, a guide cavity 38 communicated with the piston cavity is arranged in the handle body at the rear side of the piston cavity, the guide cavity 38 and the piston cavity 32 are coaxially arranged, a guide post 39 is slidably sleeved in the guide cavity 38, and the front end of the guide post extends forwards into the piston cavity and is vertically connected with the piston plate 61; the inner chamber wall of direction chamber one side is opened along the axial has the air guide groove 381 with piston chamber UNICOM, the length dimension in air guide groove is greater than the length dimension of guide post, when the piston plate is driven along piston intracavity wall front and back slip because of the pressure variation in both sides control chamber around, the piston plate can drive the synchronous back-and-forth movement along the direction chamber of back side guide post, thereby stability when having improved the piston plate and sliding from beginning to end, and because the length dimension in air guide groove is greater than the length dimension of guide post, thereby can make the direction chamber communicate with the back control chamber all the time, keep pressure the same, can not cause the hindrance to the slip of piston plate.
Example 3
As shown in fig. 9-10, the mounting seat is provided with an outer needle tube retracting mechanism, the outer needle tube retracting mechanism includes a second air release valve 71, a second retracting air supply valve 72 and a needle tube piston plate 73, both the second air release valve 71 and the second retracting air supply valve 72 are connected to the controller and are in a normally closed state, and when the controller controls the opening of the retracting air supply valve, the controller synchronously controls the opening of the second air release valve and the second retracting air supply valve.
A columnar second piston cavity 13 is coaxially arranged in the middle of the mounting seat 1, an inner shaft hole of the mounting seat and the second piston cavity are coaxially arranged and penetrate through the piston cavity, and the diameter of the second piston cavity 13 is larger than that of an inner shaft hole of the mounting seat; the 2 tails of outer needle pipe pass second piston chamber 13, slidable mounting is in shaft hole 11, and all along opening on the shaft hole inner ring wall of both sides around the second piston chamber has the ring channel, match in the ring channel and install sealing washer 332, after outer needle pipe tail end matches and installs in the shaft hole, the sealing washer in the ring channel of both sides can receive outer needle pipe's extrusion production deformation around the second piston chamber, thereby under the gliding prerequisite around in the mount pad of outer needle, the leakproofness in second piston chamber has been proved to security personnel.
The needle tube piston plate is sleeved on an outer needle tube in the second piston cavity in a matching manner, the second piston cavity is divided into a front independent cavity and a rear independent cavity in a sealing manner, and the pressure intensities in the front cavity and the rear cavity of the needle tube piston plate are both greater than the external air pressure and can support the outer needle tube to complete puncture; the front chamber 131 is connected to a supply pressure source through a second retracting supply valve 72; the rear chamber 132 is connected to the second bleed valve 72, specifically:
as shown in fig. 9, the mounting base 1 is provided with a first passage 14 and a second passage 15, a front inner cavity wall of the front chamber 131 is provided with a vent hole axially communicating with the first passage 14, the other end of the first passage 14 is connected to a pressure supply source through a second retracting air supply valve 72, and the mounting position of the second retracting air supply valve is various, for example: a second retraction air supply valve installation groove is formed in one side wall of the installation seat 11 along the radial direction, the second air supply valve is connected with a pressure supply source through an air pipe, and the air pipe is detachably connected with the second air supply valve; a pressure relief valve hole communicated with the tail end of the second channel is formed in the side wall of the mounting seat 1 adjacent to the second channel, a second pressure relief valve 73 is installed in the pressure relief valve hole communicated with the second channel 15 in a sealing mode, and an exhaust hole communicated with the head end of the second channel 15 is formed in the inner cavity wall of the rear side of the rear cavity 132 in the axial direction; when the epidural anesthesia puncture auxiliary device is used, when the controller controls the retraction air supply valve and the pressure relief valve to be opened, and the needle core is retracted, the controller synchronously controls the second retraction air supply valve and the second air relief valve to be opened, at the moment, because the air pressure in the rear cavity is instantly reduced to be the same as the external atmospheric pressure, the high-pressure air entering the front cavity through the second retraction pressure supply valve and the high-pressure air in the original front cavity can instantly push the needle tube piston plate to move backwards to the limit position along the inner wall of the second piston cavity, so that the outer needle tube is instantly retracted towards the inner part of the mounting seat, the sharp end of the retracted needle core does not protrude out of the retracted outer needle tube, then the controller controls the second retraction air supply valve to be closed, the high-pressure air in the front cavity extrudes the piston plate to keep the outer needle tube in the same state, compared with the embodiment 2, the epidural anesthesia puncture auxiliary device provided by the embodiment can retract the needle tube in the direction of the synchronous handle after puncture is completed, and the sharp end of the retracted needle core can not protrude out of the retracted outer needle tube, so that the problem that the far end of the outer needle tube is contacted with the dura mater when the retraction force is not in time after the completion of anesthesia puncture can be effectively avoided.
Example 4
Embodiment 4 differs from embodiment 3 in that the handle is cylindrical in shape and an auxiliary holder is provided outside the handle.
As shown in fig. 11-13, the handle has a cylindrical shape, and a relief valve hole 37 for installing a relief valve 63 is provided on the rear end surface of the handle 3; be equipped with the auxiliary stand who is used for providing guide and directional regulation for the dura mater puncture outside the handle, auxiliary stand 8 includes that the slip suit is in the support cover 81 outside handle 3, the rear end of support cover 81 is equipped with the electric putter 82 of being connected with the controller along the axial, and the controller can the single control electric putter 82 open, and when controller control retraction air supply valve 621 and relief valve 63 opened, the controller can control electric putter 82 and close simultaneously, when controller control power storage air supply valve closed, electric putter opened and continues the extension.
The telescopic end 821 of the electric push rod 82 is vertically connected with the tail end of the handle 3, and when the telescopic end of the electric push rod 82 extends outwards, the handle is pushed to extend forwards out of the support sleeve 81; a plurality of hollow thread holes 811 communicated with the inside are circumferentially arranged on the circumferential side wall of the bracket sleeve 81 at intervals, and the hollow thread holes 811 are axially arranged so as to exchange air with the outside and lead out an air pipe on the handle; a sliding sleeve 83 is slidably sleeved at the front end of the support sleeve 81, a threaded hole is formed in the sliding sleeve 83 along the radial direction, a fixing bolt 84 is installed in a matched mode, and when the fixing bolt 84 is screwed, the fixing bolt 84 is abutted against the support sleeve 81, so that the position of the sliding sleeve 83 is fixed; four supporting legs 85 are uniformly arranged on the front side of the sliding sleeve 83 at intervals along the circumference, the tail ends of the supporting legs 85 are connected with the sliding sleeve 83, the front ends of the supporting legs 85 are provided with adsorption components 86 which are used for being fixedly adsorbed on the back of a human body, and the adsorption components are various in types, for example, the adsorption components are suckers.
Compared with the embodiment 3, when the epidural anesthesia puncture auxiliary device provided by the embodiment is used for controlling the stylet and the outer needle tube to puncture, firstly, the position between the front end of the supporting leg and the sharp end of the stylet is adjusted through the adjusting rod, so that the sharp end of the stylet protrudes out of the front end of the supporting leg before use; then, according to the position needing puncturing, the bracket sleeve and the handle are fixed with the skin on the outer side of the puncturing part through the adsorption component, so that the sharp end of the needle point is opposite to the puncturing part; then open through controller control electric putter, it orders about nook closing member and outer syringe to push forward ejector handle and mount pad and punctures, the effect of direction has been played to the handle to support cover and landing leg, place the problem of puncture skew and take place, and replace the staff application of force through electric putter, not only can the size of accurate control application of force, but also can close electric putter in the twinkling of an eye through the controller after the puncture is accomplished, thereby effectively solved the problem that anesthesia personnel atress untimely punctures the dura mater and taken place.
Example 5
As shown in fig. 14 and 15, the telescopic end 821 of the electric push rod 82 is connected with the tail end of the handle 3 through a reciprocating connection assembly, the reciprocating connection assembly includes a connection seat 91, the connection seat 91 and the support sleeve 81 are coaxially arranged, the front end of the connection seat 91 is coaxially connected with the tail end of the front side handle through a transmission rod 92, the middle part of the rear end of the connection seat 92 is axially provided with a shaft hole, and the telescopic end of the electric push rod is coaxially and fixedly sleeved in the shaft hole at the tail end of the connection seat through a thrust bearing 93; a guide frame 94 is fixedly sleeved on the telescopic end of the electric push rod at the rear side of the connection part, the outer ring surface of the guide frame is attached to the inner ring surface of the support sleeve, and when the telescopic end of the electric push rod pushes the handle to slide back and forth along the inner wall of the support sleeve through the connecting seat, the telescopic end of the electric push rod can drive the guide frame to synchronously slide back and forth along the inner ring surface of the support sleeve; the edge of leading truck front end one side is fixed with the landing slab 95, install the reciprocating motor 96 of being connected with the controller on the landing slab 95, reciprocating motor is connected with the junction transmission, can the synchronous control reciprocating motor open and stop when controller control electric putter opens and stops, can drive handle and mount pad reciprocal rotation through the connector when reciprocating motor during operation, and handle and mount pad reciprocal rotation time can drive outer needle tubing and the reciprocal rotation of nook closing member, thereby reduce the resistance of ligament tissue to nook closing member and outer needle tubing, the going on of the puncture of being convenient for.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. The utility model provides an epidural anesthesia puncture auxiliary device, includes the mount pad of installing the outer needle tubing, and matches in the needle tubing and install the nook closing member, its characterized in that still includes handle, controller and pressure supply source, the handle front end is connected with the mount pad, and is equipped with the control mechanism that contracts in the handle, it includes piston plate, pressure monitoring subassembly, air feed valves and release valve to contract control mechanism, the handle middle part is equipped with the piston chamber, the piston plate matches and installs in the piston chamber to divide piston chamber seal into two control chambeies around, and preceding control chamber all is greater than outside air pressure with back control intracavity pressure; the pressure monitoring assembly is connected with the controller and is used for detecting the pressure intensity in the front control cavity and the rear control cavity; the front control cavity and the rear control cavity are respectively connected with a pressure supply source through corresponding air supply valves in the air supply valve group, the air release valve is communicated with the rear control cavity, the air supply valve group and the air release valve are both connected with the controller, and the started controller can control the opening and closing of the air supply valve and the pressure release valve in the air supply valve group according to the pressure intensity in the two control cavities; be equipped with interface channel in the handle of piston chamber front side, both ends communicate with needle tubing and transition chamber respectively around interface channel, sealed slidable mounting has the connecting rod in the interface channel, and the tail end of connecting rod extends into the front control intracavity and is connected with the piston plate is perpendicular, the nook closing member tail end passes outer needle tube and extends into the transition intracavity to be connected perpendicularly with the connecting rod front end.
2. The epidural anesthesia puncture assisting device according to claim 1, wherein a shaft hole penetrating through the mounting seat is axially formed in the middle of the mounting seat, the tail end of the mounting seat is coaxially and hermetically connected with the front end of the handle, the proximal end of the outer needle tube is fixedly sleeved in the shaft hole of the mounting seat, and the sharp end of the needle core in the outer needle tube extends forwards out of the outer needle tube.
3. The epidural anesthesia puncture auxiliary device according to claim 2, wherein an internal thread groove is axially formed in the middle of the front end face of the handle, an external thread table matched with the internal thread groove is axially arranged in the middle of the rear end face of the mounting seat, the external thread table is sleeved in the internal thread groove at the front end of the handle in a matching manner, so that the handle and the mounting seat are connected in a sealing manner, and a shaft hole in the mounting seat penetrates through the external thread table backwards.
4. The epidural anesthesia puncture auxiliary device according to claim 1, wherein a plurality of annular grooves are formed in the inner annular wall of the connecting channel adjacent to the piston cavity at intervals along the axis, the annular grooves are internally and fittingly provided with sealing rings, and when the connecting rod is fittingly arranged in the connecting channel, the sealing rings in the annular grooves are deformed by the extrusion of the connecting rod.
5. The epidural anesthesia puncture auxiliary device according to claim 1, wherein a pressure regulating channel and an air supply channel are arranged in the handle, the air supply valve group comprises a retraction air supply valve and a power accumulation air supply valve, and the retraction air supply valve and the power accumulation air supply valve are both in control connection with the controller; the front control cavity is connected with a retraction air supply valve, and the other end of the air supply valve is connected with a pressure supply source; the rear control cavity is connected with the power storage air supply valve through a pressure regulating channel, and the other end of the power storage air supply valve is connected with a pressure supply source.
6. The epidural anesthesia puncture auxiliary device according to claim 5, wherein the anterior cavity wall of the anterior control cavity is axially provided with an air supplement port communicated with an air supplement channel, and the other end of the air supplement channel is connected with a pressure supply source through a retraction air supply valve.
7. The epidural anesthesia puncture auxiliary device according to claim 5, wherein the back cavity wall of the back control cavity is axially provided with a pressure regulating port communicated with the pressure regulating channel, and the other end of the pressure regulating channel is connected with a pressure supply source through a power storage air supply valve.
8. The epidural anesthesia puncture auxiliary device according to claim 5, wherein the side wall of the handle adjacent to the pressure regulating channel is provided with a pressure relief valve hole communicated with the pressure regulating channel, and the pressure relief valve is plugged and installed in the pressure relief valve hole and connected with the controller.
9. The epidural anesthesia puncture auxiliary device according to claim 1, wherein the pressure in the front control chamber is the same as the pressure in the rear control chamber in an unused state, and the resistance of the needle core during puncture can push the piston plate to move backwards to trigger the controller to start, the controller after start can control the opening and closing of the air supply valve and the pressure release valve in the air supply valve bank according to the pressure in the two control chambers, and the controller can send out a prompt sound when the controller detects that the pressure of the air pressure in the rear control chamber is greater than the preset rear control chamber puncture pressure of the controller.
10. The epidural anesthesia puncture assisting device according to claim 1, wherein the pressure supply source comprises a high pressure bottle body, high pressure air is stored in the high pressure bottle body, the exhaust end of the high pressure bottle body is connected with the air supply valve, and the pressure of the high pressure air in the high pressure bottle body is higher than the air pressure in the piston cavity.
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| CN202111594073.4A CN114176730B (en) | 2021-12-24 | 2021-12-24 | Epidural anesthesia puncture auxiliary device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111594073.4A CN114176730B (en) | 2021-12-24 | 2021-12-24 | Epidural anesthesia puncture auxiliary device |
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| CN114176730B CN114176730B (en) | 2024-04-16 |
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|---|---|---|---|---|
| CN101347346A (en) * | 2008-06-26 | 2009-01-21 | 张震 | Pressure regulation instrument of fine needle puncture |
| US20110118702A1 (en) * | 2008-06-19 | 2011-05-19 | Ravindar Bethi | Device for locating epidural space while safeguarding against dural puncture through differential friction technique |
| US20140046303A1 (en) * | 2012-08-07 | 2014-02-13 | Critical Innovations, LLC | Method and device for simultaneously documenting and treating tension pneumothorax and/or hemothorax |
| CN203970506U (en) * | 2014-07-08 | 2014-12-03 | 郑州大学第一附属医院 | Safety anesthesia spinal needle and epidural catheter |
| CN205698644U (en) * | 2016-03-28 | 2016-11-23 | 西南医科大学附属医院 | Quantitatively negative pressure puncture device |
| CN112190318A (en) * | 2020-11-13 | 2021-01-08 | 武咏 | Epidural puncture needle inserting device and method for anesthesia department |
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2021
- 2021-12-24 CN CN202111594073.4A patent/CN114176730B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110118702A1 (en) * | 2008-06-19 | 2011-05-19 | Ravindar Bethi | Device for locating epidural space while safeguarding against dural puncture through differential friction technique |
| CN101347346A (en) * | 2008-06-26 | 2009-01-21 | 张震 | Pressure regulation instrument of fine needle puncture |
| US20140046303A1 (en) * | 2012-08-07 | 2014-02-13 | Critical Innovations, LLC | Method and device for simultaneously documenting and treating tension pneumothorax and/or hemothorax |
| CN203970506U (en) * | 2014-07-08 | 2014-12-03 | 郑州大学第一附属医院 | Safety anesthesia spinal needle and epidural catheter |
| CN205698644U (en) * | 2016-03-28 | 2016-11-23 | 西南医科大学附属医院 | Quantitatively negative pressure puncture device |
| CN112190318A (en) * | 2020-11-13 | 2021-01-08 | 武咏 | Epidural puncture needle inserting device and method for anesthesia department |
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| CN114176730B (en) | 2024-04-16 |
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