CN219354056U - Hemostatic device for general surgery operation - Google Patents

Abstract

The present utility model relates to a hemostatic device for general surgery, comprising: an inflatable body configured to be airtight with a first working surface of a flexible material and a second working surface of a malleable material that is at least extendable in a first direction, the inflatable body being adapted to generate a radially inward pressure upon circumscribe a pressure transmitting device and to act on a limb surface of a surgical patient; the pressure control device consists of a base, a rotating part and a clamping belt, the base is fixedly arranged on the pressure control device, the rotating part is rotationally connected with the base to form a ratchet mechanism, the clamping belt stretches into one side of a first perforation of the base, passes through a second perforation of the rotating part and then stretches out of the other side of the first perforation of the base, and the pressure of the hemostatic device can be adjusted by the effective length of the clamping belt acting on the hemostatic device under the condition of rotating the rotating part.

Description

Hemostatic device for general surgery operation

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a hemostatic device for general surgery.

Background

With the development of social economy and the progress of scientific technology, the medical level of human beings is greatly improved, the medical tourniquet is particularly shown in more types of common surgical operations, more and more patients are operated, limb bleeding is inevitably caused in the surgical operation process, on one hand, the limb bleeding of the patients is affected in the surgical operation process, on the other hand, life danger is caused to the surgical patients due to the fact that the limb bleeding is greatly increased, tourniquets are introduced into hospitals for solving the problems, the tourniquets are used for rapidly and effectively controlling external bleeding, blood volume loss is reduced, shock is avoided, the tourniquet is applied to the tourniquet in the limb surgical process, and the purpose is to create a bloodless environment for the surgical operation.

The effect of clinical rubber tube tourniquet is not good and the ordinary rubber tube tourniquet that uses now need tie when nurse uses, is difficult for once tie successfully, waste time, and with rubber tube tourniquet tie back moreover, the patient often feel uncomfortable, can leave the trace after getting rid of the tourniquet, need a period of time to resume normal, every length 25-32 centimetres of rubber tube tourniquet, inconvenient carry and disinfection treatment can cause disinfection treatment not thoroughly, becomes the potential factor that takes place hospital cross infection.

Clinically used inflatable hemostatic cuffs have a cover made of a textile material or of gum and are wrapped around the limb by at least partially overlapping means, but the cuffs can apply uneven pressure distribution to the limb beneath them. This uneven pressure distribution results on the one hand from the uneven shape of the limb, which generally does not have a uniform cylindrical shape, and on the other hand from the wrinkles formed in the textile material or gum material when the cuff is placed and inflated. In order to apply as uniform a pressure as possible to the limb, the cuff must be placed absolutely smooth around the limb. The folds and the superposition create pressure points which can then manifest themselves as tension bubbles or skin necrosis. Simultaneously, the inflatable tourniquet is used for pressing blood vessels to block blood flow to achieve the aim of hemostasis, and the tourniquet is used for pressing in a mode of encircling the whole limb to completely block blood supply, and the limb is in an anoxic state. And in the operation process, the tightness degree is difficult to be finely adjusted, which is very troublesome.

The prior art, such as CN201410336758.2, discloses an inflatable tourniquet, which belongs to medical equipment, and structurally comprises a tourniquet body, wherein two ends of the tourniquet body are connected through a connecting device, an inflatable cavity is formed in the tourniquet body, an inflatable bag is connected to the right side of the tourniquet body through an inflatable tube, one end of the inflatable tube is communicated with the inflatable cavity in the tourniquet body, the other end of the inflatable tube is connected with the inflatable bag, and a deflation valve is arranged on the inflatable tube; the upper part of the tourniquet body is transversely provided with a plurality of strip-shaped bulges; the tourniquet body is provided with a plurality of ventilation holes, and the ventilation holes are uniformly arranged along the tourniquet body; the tourniquet body has elasticity. The utility model can effectively overcome the defect that the prior rubber tube tourniquet is easy to cause discomfort to patients after knotting; the tourniquet body is tightly bound to the part of the human body to be haemostatic, and the plurality of strip-shaped bulges simultaneously compress the blood vessels to be haemostatic, so that better haemostatic effect is achieved; can make the skin of the hemostatic part breathe, etc.

Prior art like CN202120870792.3 discloses a nursing is with pressurization tourniquet, including tourniquet body, the spacing subassembly of regulation and gasbag structure, the spacing subassembly of regulation is located tourniquet body one end, the gasbag structure is located the tourniquet body other end, the spacing subassembly of regulation is including adjusting chamber, adjusting rack, half ring gear and handle, the adjusting chamber is located tourniquet body one side, tourniquet body opposite side is equipped with the recess, in the tourniquet body recess was located to the adjusting rack, adjusting rack one side is the inclined plane design, adjusting rack another side is the perpendicular design. The utility model belongs to the technical field of medical auxiliary tools, and particularly relates to a nursing pressurized tourniquet, which is provided with an adjustable limiting assembly, so that the tourniquet can be rapidly released and bound, the treatment time is saved, the secondary pressurization of the tourniquet is realized through the arrangement of an air bag structure, and the usability of the tourniquet is improved.

Prior art like CN201820846525.0 discloses a tourniquet convenient to adjust, including elasticity adjustment assembly, long tourniquet and short tourniquet, elasticity adjustment assembly includes fixed frame, pivot, separation blade, spring, locating piece and rotatory piece, fixed frame is the U type frame, movable mounting has the pivot on the fixed frame, both sides facade around the fixed frame is run through respectively at the both ends of pivot, fixedly connected with separation blade on the front end of pivot, install the spring between separation blade and the fixed frame, fixedly connected with locating piece on the rear side facade of fixed frame, evenly be equipped with a plurality of constant head tanks on the outer lane of locating piece rear side facade, the locating piece is run through to fixedly connected with rotatory piece on the rear end of pivot, fixedly connected with location boss on the inner side facade outer lane of rotatory piece, location boss sets up in the constant head tank. The utility model has simple and reasonable structure, simple and convenient use and adjustment, low manufacturing cost and strong practicability.

Although the inflatable tourniquet in the prior art can overcome the defect that the tourniquet of the prior rubber tube is easy to cause discomfort to a patient after knotting, in the process of using the tourniquet, if the tourniquet is not loosened for a long time, peripheral blood circulation disorder is likely to be caused, limb necrosis and other adverse consequences are caused, so after the tourniquet is bound, the time for binding the tourniquet needs to be paid attention, and the tourniquet is loosened for half a minute every half hour in winter and every hour in summer and then bound up, but after the tourniquet is loosened by medical staff, the tourniquet needs to be rebinding under the condition that the regulated loosening time is exceeded, however, in the process of rebinding the tourniquet, a certain time is needed, and the treatment time is wasted. Although the prior art CN202120870792.3 discloses a nursing compression tourniquet, the time of secondary compression of the tourniquet can be reduced to a certain extent, but the nursing compression tourniquet only has the secondary compression function and does not have the pressure release function, and under the condition that secondary compression is needed to be carried out on the tourniquet on the surface of a limb of a patient in the operation process, the pressure applied by the secondary compression is very large because the medical staff carries out the secondary compression on the tourniquet by feeling, but the nursing compression tourniquet only has the secondary compression function and does not have the pressure release function, and only can carry out secondary binding on the tourniquet again, so that the operation time is wasted. Under the condition that the tourniquet is clinically used for operation, the tourniquet is required to be pressurized for the second time, namely the tourniquet pressure is required to be flexibly adjusted according to actual conditions, so that the tourniquet pressure of the tourniquet for general surgery operation can be flexibly adjusted according to the actual conditions of limbs of a patient in operation.

Furthermore, there are differences in one aspect due to understanding to those skilled in the art; on the other hand, since the applicant has studied a lot of documents and patents while making the present utility model, the text is not limited to details and contents of all but it is by no means the present utility model does not have these prior art features, but the present utility model has all the prior art features, and the applicant remains in the background art to which the right of the related prior art is added.

Disclosure of Invention

In view of the shortcomings of the prior art devices, the present application provides a hemostatic device for general surgery, comprising an inflatable body, wherein the inflatable body is formed by a first working surface capable of extending at least along a first direction and a second working surface capable of extending at least along the first direction disposed on the first working surface, a pressure control device, wherein the pressure control device is formed by a base, a rotating portion and a clamping band,

preferably, the second working surface may already be extended in at least the first direction without pressurization.

Preferably, the pressure control device is provided with a base and a rotating part, and the rotating part is rotatably connected with the base to form a ratchet mechanism.

Preferably, the base and the rotating part are provided with a first perforation and a second perforation at any position, and the clamping belt can partially or completely pass through the first perforation and the second perforation to realize pressure control of the hemostatic device.

Preferably, the base bottom of the base is disc-shaped, a first perforation is arranged at the concentric position of the base bottom, the radially outward outer edge of the base bottom extends out of the base side wall along the axial direction of the first perforation, a plurality of circumferentially distributed notches are arranged on the radially outward outer end surface of the base side wall, and a plurality of circumferentially distributed tooth-shaped grooves are arranged on the radially inward inner end surface of the base side wall.

Preferably, the rotating bottom of the rotating part is cylindrical, a second through hole is axially penetrated along the direction in the direction transverse to the radial direction of the rotating bottom, and a pawl and a spring for limiting the pawl are completely or partially movably connected along the axial extending direction of the rotating bottom of the rotating part.

Preferably, any one end of the pawl extends out of the poking column in an upward direction wholly or partially, the rotating bottom is provided with a cover body along the axial direction of the rotating bottom, the radial inner diameter of the cover body is at least larger than that of the rotating bottom, the inner end surface of the cover body is radially inwards provided with a circle of clamping protrusions which are rotationally connected with the notch of the base, any position of the upper end surface of the cover body is also provided with an arc-shaped opening, the top of the poking column extends out of the arc-shaped opening, and the poking column of the pawl can slide in the arc-shaped opening.

Preferably, the inflatable body has two ends opposite in a first direction and a longitudinal end extending in the first direction between the ends, wherein the second working surface is secured at the two ends and at the first working surface in an airtight manner along the longitudinal end.

Preferably, the second working surface, which may have been extended at least in the first direction, may exert a tensile stress on the first working surface without pressurization and cause the first working surface to annularly bend radially inward.

Preferably, said radially inward annular bending of said first working surface in said unpressurized condition may remain stable.

Preferably, the inflatable body has been bent in a toroidal shape on the first working surface due to the prestressing of the second working surface in the basic state without pressurization, wherein the first working surface is located radially outward and the second working surface is located radially inward.

Preferably, in the annular shape formed by bending the second working surface on the first working surface due to the prestress of the second working surface, the two opposite end portions of the gas-filled body in the first direction may be wholly or partially joined to each other.

Preferably, the first working surface is composed of a gas-tight and flexible carrier material, and the second working surface is composed of a gas-tight stretch material.

The beneficial technical effects of the utility model include: through the application by the inflation body that first working face and second working face gas tightness constitute, take place at least along the state that first direction extends at the second working face under make the second working face be the state of no fold, this is convenient for medical personnel can effectively clean this application hemostasis device before using this application hemostasis device and act on the second working face on patient's limbs surface, can effectively avoid traditional banded tourniquet to have the cross use to use the incomplete universal phenomenon of disinfection after repeatedly, and can avoid the incomplete commonality problem such as serious that cause hemostasis device pollution of disinfection, reach high-efficient clean, thoroughly clean beneficial effect. Simultaneously, the hemostatic device has pressure control device, can realize the pressure fine setting of operation in-process after medical personnel ligature is accomplished, through the ratchet that base and rotation portion rotate the connection and constitute, can carry out the fine setting of pressure in the operation in-process, avoided patient's limbs to be in the state of tightening when the ligature tourniquet, after preliminary tying, because the relaxation of patient's limbs makes the tourniquet that ligature is good can produce certain lax problem that influences the operation effect, realized the very convenient beneficial effect of adjusting hemostatic device pressure in the operation in-process. Finally, the hemostatic device can linearly release the pressure in the inflatable body after the operation is finished through the pressure control device, so that the problem that the conventional tourniquet suddenly and completely releases the pressure to cause that the operation wound is burst through the blood flow in the limb of a patient in unit time to bleed again is avoided, and the beneficial effect that the pressure can be conveniently and effectively controlled to linearly change is achieved.

Drawings

FIG. 1 is a schematic view of a hemostatic device for general surgery according to the present utility model;

FIG. 2 is a schematic view of an inflatable body of a hemostatic device for general surgery according to the present utility model deployed in a first direction;

FIG. 3 is a top view of the internal structure of a pressure control device of the hemostatic device for general surgery according to the present utility model;

FIG. 4 is a front cross-sectional view of a base of a pressure control device of a hemostatic device for general surgery in accordance with the present utility model;

fig. 5 is a front cross-sectional view of a rotating portion of a pressure control device of a hemostatic device for general surgery according to the present utility model.

List of reference numerals

1: charging gas; 3: a first work surface; 4: a second work surface; 700: a pressure control device; 71: a base; 72: a rotating part; 712: a first perforation; 722: a second perforation; 711: the bottom of the base; 713: a base sidewall; 714: a notch; 715: tooth-shaped grooves; 721: rotating the bottom; 723: a pawl; 724: a spring; 725: a poking column; 726: a cover body; 727: a clamping protrusion; 728: an arc opening; 11: a clamping belt; 15: a conduit; 500: a first direction; 2a: the end of the charge 1 transverse to the first direction; 2b: the other end of the inflation body 1 transverse to the first direction; 2c: an end of the inflation body 1 in the first direction; 2d: the other end of the inflation body 1 in the first direction.

Detailed Description

First declare: any direction set forth in this application is provided for reader convenience only and is not a corresponding limitation of this application. In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "axial", "circumferential", "radial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

These and other features and advantages of the present utility model will be more fully understood from the following description of one or more embodiments of the utility model taken together with the accompanying drawings. In view of the prior art, the present application proposes a hemostatic device for general surgery, according to a preferred embodiment, as shown in fig. 1 and 2, an inflatable body 1 consisting of a first working surface 3 and a second working surface 4. The first working surface 3 can remain curved in the unaerated state and is composed of a rectangular carrier material which can extend in the first direction 500. The second work surface 4 is formed from a stretchable material and the stretchable material of the second work surface 4, when attached to the first work surface 3, is stretchable in at least the first direction 500. However, it is preferred that the stretch material be capable of uniaxial stretching, and that the second work surface 4 be stretch-connected to the first work surface 3 in the first direction 500.

According to a preferred embodiment, in order to maintain the gas-tight or air-tight gas-filled state 1 between the first working surface 3 and the second working surface 4, the carrier material of the first working surface 3 and the extension material of the second working surface 4 should be designed to be gas-tight or air-tight, and the second working surface 4 should be fastened to the first working surface 3 in a gas-tight or air-tight connection, in particular glued or welded to the first working surface 3.

According to a preferred embodiment, the carrier material of the first working surface 3 is a bendable but at least substantially inelastic material, such as a thermoplastic, e.g. PE, PP, without any stress applied. The carrier material of the first working surface 3 has a significantly different ductility compared to the stretch material from which the second working surface 4 is made, i.e. the carrier material of the first working surface 3 has significantly less ductility than the stretch material of the second working surface 4.

According to a preferred embodiment, the stretching material of the second working surface 4 is an elastic (elastically deformable in any direction) material, such as a gum material or a stretchable plastic, such as an A8 film. The stretch material can also be a textile material (e.g. polyester) which is coated on its surface layer by means of a gas-tight material, e.g. polyurethane. In this hemostatic device, the air-tight layer can be arranged on the textile material on one side or on both sides, so that the second working surface 4 composed of the textile material has air tightness, and in the case of using the hemostatic device of the present application, the second working surface 4 can be sealed against gas from exuding from the second working surface 4.

According to a preferred embodiment, the stretching of the stretched material is preferably at least 250% and suitably up to 450% stretching of the material can be achieved. Suitably, the stretch material has a Shore hardness in the range of 17Shore a to 100Shore a and an elastic modulus in the range of 0.05MPa to 10 MPa. The modulus of elasticity of the stretch material is significantly smaller than the modulus of elasticity of the carrier material. Advantageously, the ratio of the elastic modulus of the carrier material to the elastic modulus of the stretch material is greater than 10 and preferably greater than 100.

According to a preferred embodiment, the extensibility of the extension material of the second working surface 4 is significantly different from the extensibility of the carrier material of the first working surface 3, and the extensibility of the carrier material of the first working surface 3 is significantly smaller than the extension material of the second working surface 4. In the case of an external compressed gas source not connected to the gas-filled body 1, the first working surface 3 and the second working surface 4 are not affected by other tensile stresses than the interaction of the two, but in this case the second working surface 4 should also exert a tensile stress on the elongated first working surface 3 at least in the first direction 500 (and if necessary also transversely to the first direction 500 when the second working surface 4 is also pretensioned on the first working surface 3 and transversely to the first direction 500). On the one hand, the tensile stress of the second working surface 4 acting on the first working surface 3 in the first direction 500 causes the first working surface 3 to bend in a ring shape as shown in fig. 1; on the other hand, the extension of the second working surface 4 on the first working surface 3 at least in the first direction 500 causes the second working surface 4 to arch convexly (the second working surface 4 arches convexly radially inward relative to the inner surface of the first working surface 3). In the case of an unpressurized inflation body 1 (i.e. when the inflation chamber 1 is at ambient pressure), the annular curvature of the first working surface 3 and the convex camber of the second working surface 4 relative to the inner surface of the first working surface 3, the inflation body 1 already takes the shape of a torus. Therefore, in summary, the inflator 1 is already in a ring shape with stable shape in the unpressurized state. And in the case of a convex camber of the second working surface 4 relative to the inner surface of the first working surface 3, everywhere the material of the second working surface 4 is subjected to a tensile stress at least in the first direction 500, and therefore has no folds in the region of the second working surface 4 due to the tensile stress everywhere.

According to a preferred embodiment, in the inflation body 1 according to fig. 2, the inflation body 1 has two opposite ends 2a, 2b in the first direction 500, which have lateral edges transverse to the first direction 500 and longitudinal edges 2c, 2d extending between the ends 2a, 2b in the first direction 500. In order to achieve the above-described lateral and longitudinal side edges, the second working surface 4 is connected to the first working surface 3 around the edge of the first working surface 3 and in a sealed-air manner, for example by gluing or welding. After the connection in the above-described manner, the second working surface 4 and the inner surface of the first working surface 3 are in a mutually opposed position such that the inflation body 1 extends between the inner surface of the first working surface 3 and the inner surface of the second working surface 4, the second working surface 4 being secured on the first working surface 3 with sealing air due to the construction of the sealing air of the carrier material and the extension material such that the inflation body 1 is airtight or air-tight with or without pressurization in clinical use.

According to a preferred embodiment, openings, conduits 15 connected to a compressed gas source, for example compressed air hoses, are advantageously provided in the inflator 1 in the region of the longitudinal edges of the first working surface 3, with the openings being connected by way of plugging in order to supply compressed gas, in particular compressed air, to the inflator 1. In the case of a hemostatic treatment of a patient's limb prior to surgery, the inflatable body 1 is connected to a source of compressed gas, not shown here, via a conduit 15 (the static tension experienced by the connection of the respective hoses of the product is not less than 15N) thereon. In the case where the compressed gas generated from the compressed gas source is supplied to the inflator 1, the airtight inflator 1 generates expansion and pressure, and since the inflator 1 is composed of the airtight second working surface 4 and the first working surface 3 while the first working surface 3 is not substantially elastically deformed, the second working surface 4 having good extensibility generates a bulge and is a bulge radially inward. Because the hemostatic device of the present application is configured to act circumferentially on the surface of the patient's limb, the second working surface 4 abuts against the surface of the limb, so that the radially inward bulge created by the second working surface 4 acts on the surface of the limb and exerts a radially inward pressure on the surface of the limb, thereby achieving the hemostatic effect during the surgical procedure. Preferably, because the tissue paper is smooth, fine, soft, and provides a better pressure against the skin, the tissue paper is typically used as a cushioning material when the hemostatic device is in use, such that the inflation gas 1 will exert a uniform pressure radially inward against the limb surface.

It should be noted here that: before use, the air pipe is connected, whether the joint is tight or air leakage is detected, the air input pressure of the external compressed air source connected with the air charging body 1 through the guide pipe 15 is set to be 20Kpa, the air is observed for 20 minutes after the required pressure is reached, and whether the second working face 4 is air leakage with the first working face 3 and all the joints is detected. The inflation speed of the selected external compressed gas source is high so as to prevent the inflation speed from being too low, and prevent venous blood from causing limb congestion to form skin bluish purple, thereby affecting the hemostatic effect. The external compressed gas source may be a compressor that provides compressed gas, particularly compressed air, in the case of a tourniquet acting on the limb surface for hemostasis. The compressed gas can be used to continuously charge the charge 1 until a corresponding pressure value is reached.

According to a preferred embodiment, the pressure control device 700 implements the adjustment of the pressure of the hemostatic device in the present application through the base 71, the rotating part 72 and the clamping band 11, the fixing effect of tightly attaching the hemostatic device to the outer surface of the limb is achieved by screwing the rotating part 72, and the fine adjustment of the pressure of the hemostatic device is achieved through the ratchet mechanism formed by rotationally connecting the rotating part 72 with the base 71, so that the flexible adjustment of the pressure is achieved according to the actual situation during the operation. Specifically, the hemostatic device is wrapped around the surface of the patient's limb, secured to the surface of the patient's limb by the circumferential wrapping of the clamp 11 around the outer surface of the hemostatic device, and rotating the rotating portion 72 counterclockwise causes the clamp 11 to wrap around the rotating bottom 721, at which time the hemostatic device is tightened. When the hemostatic device needs to be loosened, the poking column 725 is rotated from the position C to the position D in fig. 3, and then the hemostatic device can be loosened by rotating the rotating part 72 clockwise, and the pressure of the hemostatic device can be finely adjusted by the ratchet mechanism formed by rotationally connecting the rotating part 72 with the base 71.

It should be noted that the above-described embodiments are exemplary, and that a person skilled in the art, in light of the present disclosure, may devise various solutions that fall within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present description and drawings are illustrative and not limiting to the claims. The scope of the utility model is defined by the claims and their equivalents. The description of the utility model encompasses multiple inventive concepts, such as "preferably," "according to a preferred embodiment," or "optionally," all means that the corresponding paragraph discloses a separate concept, and that the applicant reserves the right to filed a divisional application according to each inventive concept.

Claims (10)

1. A hemostatic device for general surgery, comprising:

an inflation body (1), wherein the inflation body (1) is formed by a first working surface (3) which can extend at least along a first direction (500) and a second working surface (4) which is arranged on the first working surface (3) and can extend at least along the first direction (500),

a pressure control device (700) which consists of a base (71), a rotating part (72) and a clamping belt (11),

characterized in that the second working surface (4) is configured in a configuration that is extendable in a first direction (500) without pressurization;

the pressure control device (700) is provided with a base (71) and a rotating part (72), and the rotating part (72) is rotationally connected with the base (71) to form a ratchet mechanism;

the base (71) and the rotating part (72) are respectively provided with a first perforation (712) and a second perforation (722), and the clamping belt (11) can partially or completely pass through the first perforation (712) and the second perforation (722) to realize pressure control of the hemostatic device.

2. A hemostatic device for general surgery according to claim 1, wherein the base bottom (711) of the base (71) is disc-shaped, a first perforation (712) is arranged concentric with the base bottom (711), a radially outward outer edge of the base bottom (711) extends out of the base side wall (713) in an axial direction of the first perforation (712), a radially outward outer end surface of the base side wall (713) is provided with a plurality of circumferentially distributed notches (714), and a radially inward inner end surface of the base side wall (713) is provided with a plurality of circumferentially distributed toothed grooves (715).

3. A hemostatic device for general surgery according to claim 2, wherein the rotary bottom (721) of the rotary part (72) is cylindrical, a second through hole (722) is axially penetrating in a direction transverse to the radial direction of the rotary bottom (721), and a pawl (723) and a spring (724) for limiting the pawl (723) are fully or partially movably connected in the axial extension direction of the rotary bottom (721) of the rotary part (72).

4. A hemostatic device for general surgery according to claim 3, wherein either end of the pawl (723) extends up to all or part of the dial column (725), the rotating base (721) is provided with a cover (726) along the axial direction thereof, the radial inner diameter of the cover (726) is at least larger than that of the rotating base (721), the inner end surface of the cover (726) is provided with a circle of snap-in protrusions (727) rotatably connected with the notch (714) of the base (71), any position on the upper end surface of the cover (726) is provided with an arc-shaped opening (728), the top of the dial column (725) extends out of the arc-shaped opening (728), and the dial column (725) of the pawl (723) can slide in the arc-shaped opening (728).

5. A hemostatic device for general surgery according to claim 1, wherein the inflatable body (1) has two ends (2 a, 2 b) opposite in a first direction (500), and a longitudinal end (2 c, 2 d) extending in the first direction (500) between the ends, wherein the second working surface (4) is secured at the two ends (2 a, 2 b) and at the first working surface (3) airtight along the longitudinal ends (2 c, 2 d).

6. A hemostatic device for general surgery according to claim 5, wherein the second working surface (4) which has been allowed to extend at least in a first direction (500) can exert a tensile stress on the first working surface (3) without pressurization and cause a radially inward annular bending of the first working surface (3).

7. A hemostatic device for general surgery according to claim 6, wherein the radially inward annular bending of the first working surface (3) in the non-pressurized condition is stable.

8. A hemostatic device for general surgery according to claim 7, wherein the inflatable body (1) has been bent in a toroidal shape on the first working surface (3) due to the prestress of the second working surface (4) in a non-pressurized basic state, wherein the first working surface (3) is located radially outside and the second working surface (4) is located radially inside.

9. A hemostatic device for general surgery according to claim 8, wherein the two opposite ends (2 a, 2 b) of the inflatable body (1) in the first direction (500) can be wholly or partly joined to each other in the toroidal shape formed by the prestress of the second working surface (4) bending over the first working surface (3).

10. A hemostatic device for general surgery according to claim 9, wherein the first working surface (3) is composed of a gas-tight and flexible carrier material and the second working surface (4) is composed of a gas-tight stretch material.