CN109223141B

CN109223141B - Marrow transfusion gun

Info

Publication number: CN109223141B
Application number: CN201811445782.4A
Authority: CN
Inventors: 赵孝英; 李静; 蒋春燕; 李婷婷; 何中情
Original assignee: Chinese Peoples Liberation Army Army Specialized Medical Center
Current assignee: Chinese Peoples Liberation Army Army Specialized Medical Center
Priority date: 2018-11-29
Filing date: 2018-11-29
Publication date: 2020-09-11
Anticipated expiration: 2038-11-29
Also published as: CN109223141A

Abstract

The invention discloses a marrow transfusion gun, which comprises a shell, a propulsion system, a needle handle fixer, a positioning sleeve and a syringe needle, wherein the shell is a cylindrical barrel, the bottom of the shell is provided with an opening, the opening is provided with an annular bulge, the top of the shell is provided with a bottom plate, and the bottom plate is provided with a through hole; one part of the propulsion system is positioned in the shell, the other part of the propulsion system passes through the through hole and is positioned outside the shell, and the propulsion system can slide up and down in the shell; the needle handle fixer is arranged in the shell and is connected with the bottom of the propulsion system; the positioning sleeve is sleeved at one end of the opening of the shell and can move up and down on the shell; the injection needle comprises an outer needle and an inner needle, wherein the inner needle is sleeved in the outer needle, an inner needle handle is arranged on the inner needle, an outer needle handle is arranged on the outer needle, the outer needle is connected with the inner needle handle through the outer needle handle, and a first magnetic part is embedded in the outer needle handle. The bone marrow transfusion gun can safely and reliably establish a transfusion channel from the outside of the bone to the internal bone marrow cavity in the shortest time.

Description

Marrow transfusion gun

Technical Field

The invention relates to the field of medical instruments, in particular to a marrow transfusion gun.

Background

At present, in most clinical emergency treatment processes, particularly when critically ill patients are rescued, an intravenous infusion channel is established, and timely administration can win precious time for rescue. However, some critically ill patients often lose the best administration time due to dehydration, shock, massive hemorrhage and other reasons when vein dredging cannot be quickly and effectively established, and finally rescue failure is caused. In this case, ensuring timely administration of the remedies and fluids is critical to the rescue by establishing the medullary canal in a very short time.

The principle of establishing marrow cavity channel is that the rich blood vessel network in marrow cavity is utilized and communicated with blood circulation via capillary blood vessel network, so that the medicine and liquid fed into marrow cavity can enter blood circulation quickly and effectively. The passage is established rapidly in a very short time and the drug can be applied in the marrow cavity as long as it can be used intravenously, including blood transfusion. Therefore, the device is particularly suitable for rescue sites and can greatly improve the success rate of rescue.

Disclosure of Invention

Aiming at the problems, the invention provides a bone marrow transfusion gun which can safely and reliably establish a channel from the outside of a bone to an internal bone marrow cavity in the shortest time so as to achieve the purposes of establishing a transfusion channel and infusing first-aid medicines.

In order to achieve the purpose, the invention is realized by the following technical scheme: a bone marrow transfusion gun, comprising:

the outer shell is a cylindrical tube, an opening is formed in the bottom of the outer shell, an annular bulge is arranged at the opening, a bottom plate is arranged at the top of the outer shell, and a through hole is formed in the bottom plate;

the propulsion system is partially positioned in the shell, the other part of the propulsion system penetrates through the through hole and is positioned outside the shell, and the propulsion system can slide up and down in the shell;

a needle handle holder disposed within the housing and coupled to a bottom of the propulsion system;

the positioning sleeve is sleeved at one end of the opening of the shell and can move up and down on the shell; and

the syringe needle, the syringe needle includes outer needle and interior needle, interior needle cover is established in the outer needle, be provided with interior needle handle on the interior needle, be provided with outer needle handle on the outer needle, outer needle passes through outer needle handle with interior needle handle is connected, the outer needle handle intussuseption is equipped with first magnetic part.

Furthermore, the propulsion system comprises a fixed plate, a rotating motor, a switch and a screw rod, wherein the fixed plate is arranged on the inner wall of the shell, the rotating motor is fixed on the fixed plate, the power output end of the rotating motor is positioned at the end part far away from the bottom plate, the power output end of the rotating motor is provided with the screw rod, the shell, the rotating motor and the screw rod are coaxial, one end of the screw rod is provided with a thread, the thread extends towards the direction of the fixed plate along the bottom end of the screw rod, the end surface of the rotating motor close to the bottom plate is provided with a first positive button and a first negative button, the first positive button and the first negative button are arranged at intervals and oppositely, one end of the switch is positioned in the shell and close to the first positive button and the first negative button, and the other end of the switch passes through hole and is positioned outside the shell, the switch can move up and down and rotate in the through hole, and when the bottom of the switch is simultaneously contacted with the first positive electrode button and the first negative electrode button, the rotating motor is started and rotates clockwise.

Further, the end face of the rotating motor close to the bottom plate is provided with a second positive button and a second negative button, the first positive button, the second positive button, the first negative button and the second negative button are sequentially and uniformly arranged on a virtual circumference at intervals, and when the switch bottom simultaneously offsets with the second positive button and the second negative button, the rotating motor is started and rotates anticlockwise.

Further, the switch comprises a sliding rod, a contact piece and a handle, the sliding rod is inserted into the through hole and can slide and rotate up and down in the through hole, the contact piece is a long-strip-shaped conductor, the contact piece and the handle are respectively located at two ends of the sliding rod, the contact piece is arranged in the shell and close to the first positive button and the first negative button, the handle is located outside the shell, an elastic piece is sleeved on the sliding rod, one end of the elastic piece abuts against the bottom plate, the other end of the elastic piece abuts against the handle, the sliding rod is provided with a limiting step, the limiting step is arranged between the bottom plate and the contact piece, and the limiting step abuts against the bottom plate under the action of the elastic piece.

Furthermore, the switch also comprises a safety bolt which is a U-shaped elastic sheet, the safety bolt is sleeved on the sliding rod and positioned outside the elastic piece, and two side surfaces of the safety bolt respectively abut against the bottom plate and the handle.

Further, the needle handle fixer includes slide, link and mounting panel, slide slidable cover is located in the shell, be provided with the internal thread on the slide, the slide passes through the internal thread with the screw rod is connected, link one end with the slide is connected perpendicularly, the mounting panel sets up the other one end of slide, be provided with the recess on the mounting panel, the size of recess with the size looks adaptation of interior needle handle, inlay in the recess and establish set second magnetic part, the magnetism of second magnetic part with the magnetism of first magnetic part is opposite.

Furthermore, a sliding groove is formed in the shell along the axis of the shell, a flange is arranged on the sliding plate and embedded in the sliding groove, and the flange can slide up and down in the sliding groove.

Further, the positioning sleeve is in threaded connection with the shell, and the positioning sleeve piece can move up and down at the end of the shell.

Furthermore, the outer surface of the shell is provided with two brackets, and the two brackets are oppositely arranged on two sides of the shell.

Furthermore, the outer surface of the shell close to the opening is also provided with scale marks and scale values, and the scale values are sequentially increased towards the bottom plate along the opening.

The bone marrow transfusion gun at least comprises the following advantages:

the shell is used for holding and fixing other parts, and the opening of the shell is provided with an annular bulge which can limit the stroke of the propulsion system. Thereby limiting the depth of insertion of the needle into the body. The needle handle holder is used for holding the injection needle, and the pushing system is used for pushing the needle handle holder so as to inject the injection needle into a required position. The whole bone marrow transfusion gun 10 is simple to operate, convenient to carry, safe and reliable.

Drawings

FIG. 1 is a schematic diagram of an embodiment of a bone marrow infusate gun;

FIG. 2 is a schematic view of the needle shaft holder shown in FIG. 1 with the injection needle in position within the bone marrow;

fig. 3 is a plan view of the rotating electric machine;

fig. 4 is a schematic exploded view of the injection needle;

FIG. 5 is a schematic view of a safety bar;

reference numerals: 10-bone marrow transfusion gun, 100-shell, 101-bottom plate, 102-opening, 103-annular bulge, 104-bracket, 200-propulsion system, 210-fixing plate, 220-rotating motor, 221-first positive button, 222-first negative button, 223-second positive button, 224-second negative button, 230-switch, 231-slide bar, 232-contact piece, 233-handle, 234-limit step, 235-elastic piece, 236-safety plug, 240-screw rod, 300-needle handle fixer, 310-slide plate, 320-connecting frame, 330-mounting plate, 331-groove, 332-second magnetic piece, 400-positioning sleeve, 500-injection needle, 510-inner needle, 520-outer needle, 310-annular bulge, and the like, 530-inner needle handle, 540-outer needle handle.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Referring to fig. 1 and 2, a bone marrow transfusion gun 10 is used for transfusing and puncturing bone marrow. Specifically, bone marrow infusion gun 10 includes a housing 100, a propulsion system 200, a needle shaft holder 300, a positioning sleeve 400, and an injection needle 500.

Specifically, the housing 100 is a cylindrical tube, and an opening 102 is opened at the bottom of the housing 100. An annular protrusion 103 is disposed at the opening 102. The top of the housing 100 is provided with a bottom plate 101, and the bottom plate 101 is provided with a through hole. The housing 100 is used to mount and support other components. To facilitate handling and manipulation of the entire bone marrow infusion gun 10, the outer surface of the housing 100 is provided with a cradle 104. The two brackets 104 are provided, and the two brackets 104 are oppositely disposed on both sides of the housing 100.

Referring to fig. 1 and 4, an injection needle 500 includes an inner needle 510 and an outer needle 520. The inner needle 510 is fitted inside the outer needle 520. The inner needle 510 is provided with an inner needle handle 510, the outer needle 520 is provided with an outer needle handle 540, the outer needle 520 is connected with the inner needle handle 530 through the outer needle handle 540, and a first magnetic part is embedded in the outer needle handle 540.

One portion of propulsion system 200 is located within housing 100 and another portion is located through the through-hole, outside housing 100. The propulsion system 200 can slide up and down within the housing 100. The propulsion system 200 is used to propel the injection needle 500 for displacement into the bone marrow. Specifically, propulsion system 200 includes a stationary plate 210, a rotating motor 220, a switch 230, and a screw 240. The fixing plate 210 is disposed on the inner wall. The rotating motor 220 is fixed to the fixing plate 210. The power output end of the rotating electrical machine 220 is located at the end away from the base plate 101. A screw 240 is provided on the power output end of the rotating motor 220. The housing 100, the rotary motor 220, and the screw 240 are coaxial. One end of the screw 240 is provided with a thread, and the thread extends along the bottom end of the screw 240 toward the fixing plate 210. The height of the threads may be as desired. In this embodiment, the height of the exceptional thread is preferably one inch. A first positive button 221 and a first negative button 222 are provided on an end surface of the rotating electrical machine 220 near the bottom plate 101. The first positive electrode button 221 and the first negative electrode button 222 are spaced apart and disposed opposite to each other.

Referring to fig. 1 and 3, one end of the switch 230 is located inside the housing 100 and is close to the first positive button 221 and the first negative button 222. The other end of the switch 230 is located outside the housing 100 through the through hole. The switch 230 can move up and down and rotate within the through hole. When the bottom of the switch 230 simultaneously abuts against the first positive button 221 and the first negative button 222, the circuit of the rotating electric machine 220 is connected, and the rotating electric machine 220 is started and rotated in the forward direction. Specifically, the switch 230 includes a slider 231, a contact piece 232, and a handle 233. The sliding rod 231 is inserted into the through hole, and the sliding rod 231 can slide and rotate up and down in the through hole. The contact 232 is an elongated conductor. The contact pieces 232 and the handles 233 are located at both ends of the slide bar 231, respectively. A contact pad 232 is disposed within the housing 100 proximate the first positive button 221 and the first negative button 222. The handle 233 is located outside the housing 100. In use, the handle 233 is pushed down toward the housing 100, and the contact piece 232 is simultaneously brought into contact with the first positive button 221 and the first negative button 222. The circuit of the rotating motor 220 is connected, and the rotating motor 220 is started and rotates clockwise, thereby driving the screw 240 to rotate clockwise, and further driving the needle handle holder 300 to advance. In this embodiment, the second positive button 223 and the second negative button 224 are further disposed on the end surface of the rotating electrical machine 220 close to the bottom plate 101, and the first positive button 221, the second positive button 223, the first negative button 222 and the second negative button 224 are sequentially and uniformly spaced on a virtual circumference. When the switch 230 is rotated by 90 °, the contact piece 232 of the switch 230 abuts against the second positive button 223 and the second negative button 224 at the same time, and the rotating motor 220 rotates counterclockwise at this time, and drives the screw 240 to rotate counterclockwise, so as to drive the needle shaft holder 300 to move backward. In the using process, for convenience of identification, the bottom plate 101 can be provided with mark scales of 'forward' and 'reverse', and in the process of rotating the switch 230, the corresponding part of the handle 233 corresponds to the marks of 'forward' and 'reverse' on the bottom plate 101, so that the switch 230 can be ensured to rotate in place.

In this embodiment, the sliding rod 231 is further sleeved with an elastic member 235. The elastic member 235 is located between the base plate 101 and the handle 233. One end of the elastic member 235 abuts against the bottom plate 101, and the other end abuts against the handle 233. The sliding rod 231 is provided with a limit step 234, the limit step 234 is arranged between the bottom plate 101 and the contact piece 232, and under the action of the elastic piece 235, the limit step 234 is abutted against the bottom plate 101. When downward pressure is applied to the knob 233, the elastic member 235 is compressed, the entire switch 230 moves downward, the contact pieces 232 contact and interfere with the corresponding positive and negative buttons of the rotary motor 220, and the rotary motor 220 starts rotating. After the pressure is removed, the sliding rod 231 moves upward under the restoring force of the elastic member 235 until the limit step 234 abuts against the bottom plate 101, and the whole switch 230 returns to the original position. At this time, the contact piece 232 is disconnected from the positive button and the negative button of the rotating electric machine 220, and the rotating electric machine 220 stops rotating. In the present embodiment, the elastic member 235 is preferably a spring.

Referring to fig. 1 and 5, in the present embodiment, the rotating electrical machine 220 is started to prevent an erroneous operation. The switch 230 also includes a safety catch 236. The safety catch 236 is a U-shaped resilient tab. In the non-use state, the safety catch 236 is clamped on the sliding rod 231 and is located outside the elastic member. And both side surfaces of the safety bar 236 are respectively abutted against the base plate 101 and the handle 233. The switch 230 is prevented from being accidentally moved by pressure to activate the rotary motor 220. When in use, the safety catch 236 can be taken down from the slide rod 231 only by opening the elastic sheets at the two sides of the safety catch 236.

The needle shaft holder 300 includes a sliding plate 310, a connecting frame 320, and a mounting plate 330. The sliding plate 310 is slidably disposed in the housing 100. The slide plate 310 has internal threads. The slide plate 310 is coupled to the screw 240 through an internal thread. One end of the connection frame 320 is vertically connected to the sliding plate 310. The mounting plate 330 is disposed at the other end of the sliding plate 310. The mounting plate 330 is provided with a recess 331. The size of indentation 331 is compatible with the size of inner needle shaft 530. The second magnetic member 332 is embedded in the recess 331. The second magnetic member 332 has a magnetic property opposite to that of the first magnetic member. When it is desired to fix the injection needle 500, the inner handle 530 of the injection needle 500 is simply placed in the recess 331, and the injection needle 500 can be fixed by the interaction of the first magnetic member and the second magnetic member 332.

In the present embodiment, in order to prevent the sliding plate 310 from moving around in the housing 100, the housing 100 is provided with a sliding groove along the axis of the housing 100. The slide plate 310 is provided with a flange. The flange is embedded in the sliding groove and can slide up and down in the sliding groove. So that the sliding plate 310 can be prevented from being tilted or rattled within the housing 100.

The positioning sleeve 400 is fitted over the opening 102 of the housing 100. The positioning sleeve 400 is connected with the shell 100 through threads, and the positioning sleeve 400 can move up and down at the end of the shell 100. The positioning sleeve 400 is used to position the injection depth of the injection needle 500. To provide visual awareness of the depth of injection, graduations are also provided on the outer surface of the housing 100 adjacent the opening 102. The scale of the scale line increases in the direction from the opening 102 toward the bottom plate 101. When the injection device is used, the positioning sleeve 400 is rotated according to the injection depth, so that the upper edge of the positioning sleeve 400 is aligned with the corresponding scale mark.

The use method of the bone marrow transfusion gun 10 specifically comprises the following steps:

after the site to be injected is sterilized, the inner needle shaft 530 of the injection needle 500 is placed in the indentation 331 on the mounting plate 330 of the needle shaft holder 300. Next, it is checked whether the injection needle 500 is restored to the "0" position. The specific operations to restore to "0" are: the switch 230 is rotated to align the switch 230 with the "reverse" scale on the base plate 101, and then the knob 233 is pressed downward to simultaneously contact the second positive button 223 and the second negative button 224 using the contact pad 232 on the switch 230. At this time, the rotating motor 220 rotates counterclockwise, and the needle shaft holder 300 ascends along the screw 240 until the needle shaft holder 300 moves to the limit position of the thread on the screw 240. Subsequently, the alignment sleeve 400 is rotated to align the upper edge of the alignment sleeve 400 with the corresponding graduations on the indicia on the housing 100, depending on the desired depth of injection. Next, switch 230 is rotated again, aligning switch 230 with the "positive" scale on base plate 101.

Subsequently, the right hand holds handle 233 of bone marrow infusion gun 10 and aligns positioning sleeve 400 with the injection site, and grasps positioning sleeve 400 with the thumb and forefinger of the left hand and presses the entire bone marrow infusion gun 10 against the injection site. Next, the housing 100 is released by the right hand, the safety catch 236 on the switch 230 is removed, and then, the palm of the right hand is covered on the handle 233, and the brackets 104 on both sides of the handle 233 are hooked with both fingers; subsequently, the palm presses the switch 230, and when the contact piece 232 on the switch 230 simultaneously contacts with the first positive button 221 and the first negative button 222, the screw 240 rotates clockwise and drives the needle holder 300 and the injection needle 500 to move downwards until the mounting plate 330 of the needle holder 300 abuts against the annular protrusion 103 at the opening 102 of the casing 100, and the injection needle 500 is inserted into the bone marrow of the patient and reaches a predetermined position. Finally, by gently lifting the bone marrow transfusion gun 10 upward while holding the stable injection needle 500 with the left hand, the bone marrow transfusion gun 10 can be separated from the injection needle 500. After the puncture of the injection needle is finished, the transfusion operation can be carried out.

The above bone marrow transfusion gun 10: the housing 100 is used for holding and fixing other components, and an annular protrusion 103 is arranged at an opening 102 of the housing 100 and can limit the stroke of the propulsion system 200. Brackets 104 are provided on both sides of the housing 100 to facilitate handling and application of force. The bottom plate 101 of the housing 100 is provided with "forward" and "reverse" indicia to facilitate alignment of the contact pads 232 on the switch 230 with corresponding positive and negative buttons of the rotating electrical machine 220. The opening 102 of the housing 100 is further provided with scale marks to visually display the position of the positioning sleeve 400. Thereby limiting the depth of insertion of the needle 500 into the body. The needle handle holder 300 is used to hold the injection needle 500. the second magnetic member 332 of the needle handle holder 300 is opposite to the first magnetic member on the injection needle 500, which further stabilizes the injection needle 500 in the recess 331. The advancing system 200 is used to advance the needle holder 300 to inject the injection needle 500 into a desired location. The advancing system 200 can be rotated in a forward direction and direction so that the injection needle 500 can be advanced and the advancing system returned to the "0" position for the next operation. The whole bone marrow transfusion gun 10 is simple to operate, convenient to carry, safe and reliable.

Finally, it should be noted that: while there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of 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 invention 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. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A bone marrow transfusion gun, comprising:

the injection needle comprises an outer needle and an inner needle, the inner needle is sleeved in the outer needle, an inner needle handle is arranged on the inner needle, an outer needle handle is arranged on the outer needle, the outer needle is connected with the inner needle handle through the outer needle handle, and a first magnetic part is embedded in the outer needle handle;

the propulsion system comprises a fixed plate, a rotating motor, a switch and a screw rod, wherein the fixed plate is arranged on the inner wall of the shell, the rotating motor is fixed on the fixed plate, the power output end of the rotating motor is positioned at the end part far away from the bottom plate, the power output end of the rotating motor is provided with the screw rod, the shell, the rotating motor and the screw rod are coaxial, one end of the screw rod is provided with a thread, the thread extends towards the direction of the fixed plate along the bottom end of the screw rod, the end surface of the rotating motor close to the bottom plate is provided with a first positive button and a first negative button, the first positive button and the first negative button are arranged at intervals and oppositely, one end of the switch is positioned in the shell and close to the first positive button and the first negative button, and the other end of the switch passes through hole and is positioned outside the shell, the switch can move up and down and rotate in the through hole, and when the bottom of the switch is simultaneously contacted with the first positive electrode button and the first negative electrode button, the rotating motor is started and rotates clockwise.

2. The bone marrow transfusion gun of claim 1, wherein the end surface of the rotary motor near the bottom plate is further provided with a second positive button and a second negative button, and the first positive button, the second positive button, the first negative button and the second negative button are sequentially and uniformly arranged on a virtual circumference at intervals, and when the bottom of the switch is simultaneously abutted against the second positive button and the second negative button, the rotary motor is started and rotates anticlockwise.

3. The bone marrow transfusion gun of claim 1, characterized in that the switch comprises a slide bar, a contact piece and a handle, the slide bar is inserted into the through hole, the slide bar can slide up and down and rotate in the through hole, the contact piece is an elongated conductor, the contact piece and the handle are respectively located at two ends of the slide bar, the contact piece is arranged in the shell and close to the first positive button and the first negative button, the handle is located outside the shell, an elastic piece is sleeved on the slide bar, one end of the elastic piece abuts against the bottom plate, the other end of the elastic piece abuts against the handle, the slide bar is provided with a limit step, the limit step is arranged between the bottom plate and the contact piece, and the limit step abuts against the bottom plate under the action of the elastic piece.

4. The bone marrow transfusion gun as claimed in claim 3, wherein the switch further comprises a safety plug, the safety plug is a U-shaped elastic sheet, the safety plug is sleeved on the sliding rod and is positioned outside the elastic piece, and two side surfaces of the safety plug are respectively abutted against the bottom plate and the handle.

5. The bone marrow transfusion gun as claimed in claim 1, wherein the needle handle fixer comprises a sliding plate, a connecting frame and a mounting plate, the sliding plate is slidably sleeved in the housing, an internal thread is arranged on the sliding plate, the sliding plate is connected with the screw rod through the internal thread, one end of the connecting frame is vertically connected with the sliding plate, the mounting plate is arranged at the other end of the sliding plate, a groove is arranged on the mounting plate, the size of the groove is matched with that of the inner needle handle, a second magnetic member is sleeved in the groove in an embedded manner, and the magnetism of the second magnetic member is opposite to that of the first magnetic member.

6. The bone marrow infusion gun according to claim 5, wherein a sliding groove is arranged on the casing along the axis of the casing, a flange is arranged on the sliding plate, the flange is embedded in the sliding groove, and the flange can slide up and down in the sliding groove.

7. The bone marrow infusion gun according to claim 1, wherein the positioning sleeve is threadedly connected to the housing, the positioning sleeve member being movable up and down the end of the housing.

8. The bone marrow infusion gun according to claim 1, wherein the outer surface of the casing is provided with two brackets, and the two brackets are oppositely arranged on two sides of the casing.

9. The bone marrow infusion gun according to claim 1, wherein the outer surface of the casing adjacent to the opening is further provided with graduation marks and graduation values, and the graduation values are sequentially increased along the opening toward the bottom plate.