CN112022273A - Novel atmospheric pressure tourniquet suitable for operation of four limbs near-end - Google Patents

Abstract

The invention belongs to the technical field of instruments for compressing tubular parts such as blood vessels in a body and the like, and discloses a novel air pressure tourniquet suitable for limb proximal surgery, which comprises a strap body and an air bag layer wrapped outside the strap body, wherein one end of the strap body is provided with a plurality of rows of fixing buckles, the other end of the strap body is provided with a clasp matched with the fixing buckles, the outside of the air bag layer is provided with an air inlet interface, and the air inlet interface is communicated with an air charging part and a pressure testing part; the gas filling device also comprises an installation plate, wherein the bottom of one end of the installation plate is provided with two clamping blocks, and the gas filling part is fixed on the installation part; the pressure test portion includes the transparent display post with the interface intercommunication that admits air, and the one end opening of the interface that admits air is kept away from to the display post, has the push pedal along its axial sliding connection in the display post, and the upper surface of display post outer wall is equipped with the scale along the axial, and the outer lane of push pedal is equipped with the display strip. The invention solves the problem that the prior art can not adjust the pressure of the air pressure tourniquet, and is easy to cause necrosis due to excessive compression of patients.

Description

A new type of pneumatic tourniquet suitable for proximal extremity surgery

technical field

The invention belongs to the technical field of instruments for compressing tubular parts such as blood vessels in the body, and particularly relates to a novel pneumatic tourniquet suitable for surgery on the proximal end of the limbs.

Background technique

Air pressure tourniquet is a commonly used equipment in limb trauma surgery, which can significantly reduce the bleeding of the wound during the operation, so that the surgical field of vision is clear, various tissues are easy to identify, and the operation is convenient. However, when the tourniquet is applied to the proximal end of the limbs, because the use position is close to the trunk, the fixation is inconvenient, and the tourniquet is prone to fall off, which cannot effectively reduce the wound bleeding. Therefore, the tourniquet is usually fixed by means of Kirschner needles to prevent the tourniquet from slipping, but the Kirschner needles will penetrate into the patient's body, which will increase the pain of the patient and easily cause secondary damage. At the same time, when the current pneumatic tourniquet is in use, the pressure of the tourniquet to the patient cannot be adjusted, so it is easy to cause the necrosis of the excess pressure part after long-term ischemia.

Therefore, the inventor has carried out long-term research and development to form a new type of tourniquet, which can adjust the pressure in the tourniquet, thereby reducing the probability of post-ischemic necrosis due to excessive pressure; at the same time, it can reduce hemostasis. With the probability of slipping, and thus improve the fixed effect.

SUMMARY OF THE INVENTION

The present invention is intended to provide a new type of pneumatic tourniquet suitable for proximal limb surgery, so as to solve the problem that the existing technology cannot adjust the pressure of the pneumatic tourniquet, which is prone to excessive pressure on the patient, resulting in necrosis.

In order to achieve the above purpose, the present invention provides the following technical solutions: a novel pneumatic tourniquet suitable for proximal limb surgery, comprising a belt body and an airbag layer wrapped on the outside of the belt body, and one end of the belt body is provided with multiple rows of fixed The other end of the belt body is provided with a hook matched with the fixed buckle, an air inlet interface is arranged on the outer side of the air bag layer, and the air inlet interface is connected with the air filling part and the pressure test part; it also includes a mounting plate for installing There are two clamping blocks at the bottom of one end of the board, and the air filling part is fixed on the installation part; the pressure test part includes a transparent display column that communicates with the air inlet interface. A push plate is slidably connected in the axial direction, the upper surface of the outer wall of the display column is provided with a scale along the axial direction, and the outer ring of the push plate is provided with a display bar.

The technical principle of this technical solution:

Wrap the strap around the patient's arm and secure the strap with the buckles and hooks. The guardrail on the hospital bed is then clamped between the two clamping blocks on the mounting plate, so that the mounting plate and the belt can be fixed. The gas filling part is used to fill the air bag with gas, so that the air bag can be inflated, and the patient's arm can be tightened, so as to stop the bleeding and facilitate the operation. The pressure testing part is provided, and the pressure testing part communicates with the airbag, so the pressure applied to the patient's arm by the gas in the airbag is consistent with the pressure of the pressure testing part. When inflating the gas, the gas will squeeze the push plate, so that the push plate slides along the display column, and when the push plate moves to the proper position, the gas filling is stopped; thus the installation of the tourniquet is completed.

The beneficial effects of this technical solution:

1. By setting up the pressure test section, the pressure in the airbag layer can be tested to reduce the occurrence of tissue necrosis caused by the excessive pressure applied to the patient by the airbag layer;

2. By connecting the display column with the air inlet interface, the gas pressure in the airbag can be consistent with the gas pressure in the display column; and when the airbag layer is filled with gas, the push plate in the display column will be squeezed, thereby When the push plate slides, and the display bar on the outer ring of the push plate overlaps the scale on the outer wall of the display column, the gas pressure in the display column and the air bag can be determined by reading the reading, so as to facilitate the adjustment of the gas pressure in the air bag. to adjust;

3. By setting two blocks on the installation board, the guardrail of the hospital bed can be clamped on the installation board, so as to realize the fixation between the installation board and the hospital bed, and complete the fixation of the tourniquet. During the operation, the tourniquet It is not easy to fall off, which is convenient for the operation.

Further, the gas filling part comprises a barrel body arranged on the mounting plate, the bottom end of the barrel body is communicated with the air inlet interface, a pressure plate is vertically slidably connected in the barrel body, a moving rod is fixed on the pressure plate, and the moving rod penetrates through the top of the barrel body, and The moving rod is threadedly connected with the barrel body.

Beneficial effect: Since the moving rod is threadedly connected to the barrel body, when the moving rod is rotated, the moving rod will move vertically, which in turn drives the pressure plate to move vertically, thereby squeezing the gas in the barrel, so that the gas passes through the air inlet interface Enter the airbag and complete the inflation of the airbag. Through this air intake method, compared with inflation by an air pump, the gas will slowly enter the air bag, so that the air bag slowly squeezes the patient and stops bleeding; the pressure on the patient can be gradually increased, so that the patient gradually Adapt to pressure and improve the comfort of use.

Further, an intake valve is arranged in the intake port, and a control member for driving the opening and closing of the intake valve is also included.

Beneficial effects: the air intake valve is provided, and the air intake valve can be closed after the air bag is inflated, so as to prevent the gas in the air bag from being discharged, realize the pressure maintenance of the air bag, and improve the hemostasis effect on the affected area.

Further, the intake valve includes a conical sleeve and a stopper fixed in the air inlet interface, the large diameter end of the conical sleeve faces the side of the airbag; it also includes a sealing ball located between the conical sleeve and the stopper, and the sealing ball is connected to the airbag. There are springs between the stops.

Beneficial effects: when the sealing ball is located in the conical sleeve, the small diameter end of the conical sleeve is sealed, so as to realize the sealing of the air inlet interface; when the sealing ball is separated from the conical sleeve, the air bag and the air inlet interface can be separated from the air inlet interface. Air connection.

Further, the control part includes a magnetic block located in the sealing ball and an electromagnet fixed on the display column and mutually repelling the magnetic block, and an end of the inner wall of the display column close to the air inlet interface is provided with a first conductive sheet electrically connected to the electromagnet; A battery is embedded in the push plate, and a second conductive plate electrically connected to the battery is arranged on the side of the outer ring of the push plate close to the first conductive plate.

Beneficial effects: when filling air into the airbag, the gas squeezes the sealing ball, so that the sealing ball is far away from the conical sleeve, the connection of the air inlet interface is realized, and the airbag is inflated; after the inflation is completed, the squeezed sealing ball disappears, The sealing ball is reset under the action of the spring to seal the air inlet interface. When the gas in the air bag needs to be discharged, the moving rod is rotated in the opposite direction, so that the pressure plate moves up, thereby attracting the gas in the display column, so that the push plate gradually slides towards the direction of the air inlet interface, so that the first conductive sheet and the first conductive sheet The two conductive sheets are gradually contacted until the first conductive sheet is in contact with the second conductive sheet, the electromagnet is connected to the battery, and the electromagnet generates a magnetic field to repel the magnetic block, thereby making the intake valve open. At this time, the gas in the airbag gradually enters the barrel, gradually reducing the pressure on the patient, so that the patient gradually adapts to the pressure change and improves the adaptability.

Further, a limit ring is arranged in the open end of the display column, and a spring for buffering is arranged between the limit ring and the push plate.

Beneficial effects: setting the limit ring can limit the sliding of the push plate and prevent the push plate from sliding out of the limit post; at the same time, when the push plate slides and squeezes the spring, the force of the spring's return can provide a pushing force for the push plate, preventing the push plate from sliding out of the limit column. The push plate quickly hits the limit plate, causing the limit plate to be damaged by the impact.

Further, the barrel body is threadedly connected with the air inlet interface, and the barrel body is rotatably connected with the mounting plate.

Beneficial effects: through the screw connection, the belt body part and the air intake part can be easily disengaged. During the first aid process, when the patient needs to be transferred from the ambulance bed to the operating bed, the mounting plate part can be removed from the belt body. Facilitate the transfer of patients.

Further, it also includes a sealing cover threadedly connected with the air inlet port.

Beneficial effects: a sealing cover is provided, and after the installation plate is removed, the air inlet interface can be sealed by the sealing cover, the sealing performance of the air inlet interface is improved, and the probability of air leakage of the air bag is reduced.

Further, an anti-rotation member is also provided between the barrel body and the mounting plate.

Beneficial effects: the anti-rotation element can limit the rotation of the barrel, so that when the moving rod rotates and drives the pressing plate to move down, the barrel will not rotate along with it, so that gas can be easily filled into the airbag.

Further, the anti-rotation member includes protruding teeth hinged on the mounting plate and ratchet teeth fixed on the outer ring of the cylinder.

Beneficial effect: Through the cooperation of the protruding teeth and the ratchet teeth, when the moving rod rotates to drive the pressure plate to move down, the ratchet teeth are located on the gap between the protruding teeth and the mounting plate, so the protruding teeth block the ratchet teeth, so that the barrel will not The rotation occurs, so as to realize the relative rotation between the moving rod and the barrel body, and then complete the upward movement of the pressing plate. When the moving rod rotates in the opposite direction, it can drive the barrel to rotate, so that the barrel is separated from the air inlet interface.

Description of drawings

1 is a longitudinal cross-sectional view of Embodiment 1 of the present invention;

2 is a partial cross-sectional view of Embodiment 2 of the present invention;

FIG. 3 is a top view of the mounting plate in Embodiment 2 of the present invention.

Detailed ways

The following is further described in detail by specific embodiments:

Reference numerals in the accompanying drawings include: belt body 1, air bag 2, mounting plate 3, clamping block 31, air inlet port 4, conical sleeve 41, sealing ball 42, magnetic block 421, stopper 43, display column 5 , push plate 51 , limit ring 52 , first conductive sheet 53 , second conductive sheet 54 , barrel 6 , pressure plate 61 , moving rod 62 , handle 63 , slider 64 , protruding teeth 7 , ratchet teeth 8 .

Example 1:

A new type of pneumatic tourniquet suitable for proximal extremity surgery, basically as shown in Figure 1, includes a belt body 1 and a mounting plate 3, the belt body 1 includes a fixed layer at both ends and a pressurized layer in the middle, and the left The upper surface of the fixing layer is provided with multiple rows of fixing buckles. In this embodiment, there are four rows of fixing buckles, and each row is provided with three fixing buckles; the lower surface of the fixing layer on the right side is provided with a row of buckles, a row of buckles There are three. An air bag 2 is wrapped on the upper surface of the pressurized layer, and an air inlet port 4 is communicated with the middle part of the upper side of the air bag 2 . Two clamping blocks 31 are provided on the right side of the bottom surface of the mounting plate 3 , a clamping hole is formed between the two clamping blocks 31 , and rubber clamping layers are fixed on opposite sides of the two clamping blocks 31 .

The inlet port 4 is communicated with a pressure testing part and an air filling part, the pressure testing part includes a display column 5 which is communicated with the left side of the inlet port 4, the left end of the display column 5 is open, and the inner ring of the left end of the display column 5 is provided with a limit ring 52. A push plate 51 is slidably connected in the display column 5 , the left end of the push plate 51 is welded with a spring, and the left end of the spring is welded on the limit ring 52 . The display column 5 is transparent and can be made of glass or plastic material, and in this embodiment, plastic material is selected. The upper surface of the display column 5 is provided with a scale along the horizontal direction, and the outer ring of the push plate 51 is provided with a display bar, and the display bar is red.

The intake port 4 is also provided with an intake valve, and the intake valve includes a conical sleeve 41 and a stopper 43 located below the conical sleeve 41 . The large-diameter end of the conical sleeve 41 faces downward, and a sealing ball 42 is also arranged in the conical sleeve 41. The sealing ball 42 can seal the small-diameter end of the conical sleeve 41; the bottom of the sealing ball 42 is welded with a spring, and the bottom end of the spring is welded on stop 43.

It also includes a control member for driving the opening and closing of the intake valve. The control member includes a magnetic block 421 fixed on the sealing ball 42 and an electromagnet fixed at the connection between the display column 5 and the intake port 4. The electromagnet is electrically connected with a first. The conductive sheet 53, the first conductive sheet 53 is fixed on the right end of the inner bottom wall of the display column 5. A battery is embedded on the push plate 51 , a second conductive sheet 54 is electrically connected to the battery, and the second conductive sheet 54 is fixed on the bottom surface of the push plate 51 . Therefore, when the push plate 51 slides to the right end of the display column 5 , the first conductive sheet 53 and the second conductive sheet 54 can be in contact with each other, so that the battery and the electromagnet are connected to generate a magnetic field that repels the magnetic block 421 .

The gas filling part includes a barrel 6 that penetrates through the mounting plate 3 and is fixed with the mounting plate 3 . A pressure plate 61 is vertically slidably connected in the barrel 6, and a moving rod 62 is rotatably connected to the top of the pressing plate 61. The moving rod 62 penetrates the top of the barrel 6, and the moving rod 62 is threadedly connected with the top of the barrel 6; the top of the moving rod 62 A handle 63 is fixed.

The specific implementation process is as follows:

During the operation, the part of the mounting plate 3 with the blocking blocks 31 is first placed on the guardrail of the hospital bed, and the guardrail is clamped between the two blocking blocks 31 to realize the fixing of the mounting board 3 . Then, attach the bottom surface of the belt body 1 to the place where the patient is to be used (for example, the arm), and wrap the belt body 1 around the patient's arm, and fix the belt body 1 on the patient's arm by the cooperation of the fixing buckle and the hook. on the affected arm.

When the moving rod 62 is rotated again, since the moving rod 62 is threadedly engaged with the barrel body 6 , when the moving rod 62 is rotated, vertical movement will occur. When the moving rod 62 rotates clockwise, it will move downward and drive the pressure plate 61 to move downward, thereby squeezing the gas in the barrel 6, so that the pressure in the barrel 6 increases, so the gas squeezes the push plate 51 and The sealing ball 42 moves down to open the intake valve, and the gas in the barrel 6 enters the airbag 2 to realize the inflation of the airbag 2 .

At this time, the air bag 2, the display column 5 and the barrel body 6 are in communication, so when the barrel body 6 is squeezed, the gas in the barrel body 6 will gradually enter the air bag 2 to realize that the pressure in the air bag 2, the display column 5 and the barrel body 6 is realized. Consistent. When the gas enters the airbag 2, it also enters the display column 5 and pushes the push plate 51 in the display column 5 to move to the left. When the display bar on the push plate 51 moves to a proper position, the moving rod 62 stops rotating. The sealing ball 42 is reset under the action of the spring and seals the conical sleeve 41 , so that no gas will enter into the air bag 2 and no air will be discharged from the air bag 2 . According to the alignment of the display bars on the push plate 51 with the different scales on the display column 5, it indicates that the gas pressure in the airbag 2 is different, so that the pressure in the airbag 2 can be adjusted during inflation.

After the use is completed, the moving rod 62 is reversely rotated, so that the moving rod 62 drives the pressing plate 61 to move up, so as to inhale into the barrel 6. At this time, the pressing plate 51 in the display column 5 slides to the right, so that the first conductive sheet 53 and the second conductive sheet 54 are gradually approached. After the first conductive sheet 53 and the second conductive sheet 54 are attached to each other, the electromagnet is connected to the power supply, and a force is generated to repel the magnetic block 421. Therefore, the sealing ball 42 moves downward and opens the intake valve, so that the gas in the airbag 2 Gradually enter the barrel 6, and gradually loosen the patient's arm, so that the belt body 1 can be easily removed; and the force on the patient's arm is gradually reduced, which is convenient for the patient to adapt to the gradual reduction of the force and improves the comfort of use. Spend.

Example 2:

The difference between Embodiment 2 and Embodiment 1 is that, as shown in FIG. 2 , in this embodiment, the barrel body 6 is rotatably connected to the mounting plate 3 , the barrel body 6 is threadedly connected to the air inlet port 4 , and the air inlet port 4 is threadedly connected. A sealing cap is also threaded. The mounting plate 3 is provided with a mounting hole, the barrel body 6 is located in the mounting hole, the mounting plate 3 is also provided with an annular chute communicating with the mounting hole, and the outer wall of the barrel body 6 is provided with a sliding block 64 matched with the sliding groove. , so the relative rotation between the cylinder and the mounting plate 3 can be realized.

There is also an anti-rotation piece between the barrel 6 and the mounting plate 3. As shown in FIG. 3, the anti-rotation piece includes a plurality of protruding teeth 7 hinged in the mounting hole. The protruding teeth 7 are evenly arranged along the circumferential direction of the mounting hole. A spring is arranged between the tooth 7 and the inner wall of the mounting hole; a ratchet 8 is arranged on the outer wall of the barrel body 6 . The convex teeth 7 and the ratchet teeth 8 constitute a ratchet pawl structure.

The specific implementation process is as follows:

When the moving rod 62 is rotated clockwise and the moving rod 62 moves down, the ratchet teeth 8 move between the protruding teeth 7 and the inner wall of the mounting hole, and the ratchet teeth 8 are restricted, so that the gap between the moving rod 62 and the barrel 6 is caused. The relative rotation can realize the smooth downward movement of the pressing plate 61 . During the first aid process, when the patient needs to be transferred from the emergency bed to the operating bed, the moving rod 62 is rotated counterclockwise, and the moving rod 62 drives the barrel 6 to rotate in the opposite direction. The teeth 7 are pressed against the hole wall of the mounting hole to realize the smooth rotation of the barrel body 6 , and then the mounting plate 3 is removed from the belt body 1 , and the air inlet port 4 is closed by twisting the sealing cover.

For those skilled in the art, without departing from the concept of the technical solution of the present invention, several modifications and improvements can also be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of this patent. and the availability of patents.

Claims (10)

1. A new type of pneumatic tourniquet suitable for proximal limb surgery, including a belt body and an airbag layer wrapped on the outside of the belt body, one end of the belt body is provided with multiple rows of fixing buckles, and the other end of the belt body is provided with The clasp matched with the fixed buckle is characterized in that: an air inlet interface is arranged on the outer side of the air bag layer, and the air inlet interface is connected with an air filling part and a pressure testing part; it also includes a mounting plate, and the bottom of one end of the mounting plate is provided with Two clamping blocks, the air filling part is fixed on the installation part; the pressure testing part includes a transparent display column communicated with the air inlet interface, the end of the display column away from the air inlet interface is open, and a pusher is slidably connected in the display column along its axial direction. The upper surface of the outer wall of the display column is provided with a scale along the axial direction, and the outer ring of the push plate is provided with a display bar. 2. A new type of pneumatic tourniquet suitable for proximal limb surgery according to claim 1, characterized in that: the gas filling part comprises a barrel body arranged on the mounting plate, and the bottom end of the barrel body is communicated with the air inlet interface The barrel body is vertically slidably connected with a pressure plate, a moving rod is fixed on the pressure plate, the moving rod penetrates the top of the barrel body, and the moving rod is threadedly connected with the barrel body. 3. A new type of pneumatic tourniquet suitable for proximal limb surgery according to claim 2, characterized in that: an air inlet valve is provided in the air inlet interface, and also includes a control member for driving the opening and closing of the air inlet valve. 4. A new type of pneumatic tourniquet suitable for proximal limb surgery according to claim 3, characterized in that: the air inlet valve comprises a conical sleeve and a stopper fixed in the air inlet interface, and the large conical sleeve is The radial end faces one side of the air bag; it also includes a sealing ball located between the conical sleeve and the block, and a spring is arranged between the sealing ball and the block. 5. A new type of pneumatic tourniquet suitable for proximal limb surgery according to claim 4, characterized in that: the control part comprises a magnetic block located in the sealing ball and an electromagnetic block fixed on the display column that repels the magnetic block. Iron, the end of the inner wall of the display column close to the air inlet interface is provided with a first conductive sheet that is electrically connected to the electromagnet; the push plate is embedded with a battery, and the side of the outer ring of the push plate close to the first conductive sheet is provided with a battery connected to the battery. The second conductive sheet is electrically connected. 6. A new type of pneumatic tourniquet suitable for proximal limb surgery according to claim 5, characterized in that: a limit ring is arranged in the open end of the display column, and a buffer for buffering is arranged between the limit ring and the push plate the spring. 7. A novel pneumatic tourniquet suitable for proximal limb surgery according to any one of claims 1-6, wherein the barrel is threadedly connected to the air inlet interface, and the barrel is rotatably connected to the mounting plate. 8. A new type of pneumatic tourniquet suitable for proximal limb surgery according to claim 7, characterized in that it further comprises a sealing cover threadedly connected to the air inlet port. 9 . The novel pneumatic tourniquet suitable for proximal limb surgery according to claim 8 , wherein an anti-rotation member is further provided between the barrel body and the mounting plate. 10 . 10. A new type of pneumatic tourniquet suitable for surgery on proximal limbs according to claim 9, wherein the anti-rotation member comprises protruding teeth hinged on the mounting plate and ratchet teeth fixed on the outer ring of the cylinder.

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