阅读说明：本技术 一种急诊外科颈部固定装置 (Neck fixing device for emergency surgery ) 是由 刘利 高亚洲 于 2020-05-19 设计创作，主要内容包括：本发明公开了一种急诊外科颈部固定装置,属于医疗器械技术领域,一种急诊外科颈部固定装置,包括颈部固定架和头部固定板,头部固定板的下表面开设有与球面槽,颈部固定架的上侧壁上固定有竖直设置的支座,支座内部设有升降调节机构,颈部固定架包括环形固定架和环形气囊,环形固定架的内周壁上开设有与环形气囊厚度相匹配的环形槽,环形气囊卡接在环形槽内,环形固定架远离支座的侧壁上固定连接有连接管,连接管的端部连接有按压充气机构,可以实现利用环形气囊快速的对使用者的颈部进行固定,并对使用者的头部进行辅助定位,固定效果好,通过调节环形气囊即可实现对定位的松紧度进行调节,能有效避免长时间使用产生的不适。(The invention discloses a neck fixing device for emergency surgery, which belongs to the technical field of medical instruments and comprises a neck fixing frame and a head fixing plate, wherein a spherical groove is formed in the lower surface of the head fixing plate, a vertically arranged support is fixed on the upper side wall of the neck fixing frame, a lifting adjusting mechanism is arranged inside the support, the neck fixing frame comprises an annular fixing frame and an annular air bag, an annular groove matched with the thickness of the annular air bag is formed in the inner peripheral wall of the annular fixing frame, the annular air bag is clamped in the annular groove, a connecting pipe is fixedly connected to the side wall of the annular fixing frame, which is far away from the support, the end part of the connecting pipe is connected with a pressing and inflating mechanism, the neck of a user can be quickly fixed by utilizing the annular air bag, the head of the user can be assisted and positioned, the fixing effect is good, and the positioning tightness can be adjusted by adjusting the annular air bag, can effectively avoid discomfort caused by long-time use.)

1. The utility model provides an emergency surgery neck fixing device, includes neck mount (1) and head fixing plate (3), its characterized in that: the lower surface of the head fixing plate (3) is provided with a spherical groove (4), the center of the spherical groove (4) and the center of the neck fixing frame (1) are positioned on the same straight line, the upper side wall of the neck fixing frame (1) is fixed with a vertically arranged support (2), a lifting adjusting mechanism is arranged inside the support (2) and is used for adjusting the upper position and the lower position of the head fixing plate (3), the neck fixing frame (1) comprises an annular fixing frame (10) and an annular air bag (11), the inner peripheral wall of the annular fixing frame (10) is provided with an annular groove matched with the thickness of the annular air bag (11), the annular air bag (11) is clamped in the annular groove, the side wall of the annular fixing frame (10) far away from the support (2) is fixedly connected with a connecting pipe (13), the end part of the connecting pipe (13) is connected with a pressing and inflating mechanism (14), press and inflate the inside air bag that is equipped with of mechanism (14), press and inflate and be connected with intake pipe (15) on the lateral wall that mechanism (14) kept away from annular mount (10), intake pipe (15) are connected with the air inlet of inflating the air bag, be equipped with first check valve (16) on intake pipe (15), press and inflate and be connected with communicating pipe (17) on the lateral wall of one side that mechanism (14) is close to annular mount (10), and communicating pipe (17) run through connecting pipe (13) and set up, be equipped with second check valve (18) on communicating pipe (17), the one end of communicating pipe (17) is connected with the gas outlet of inflating the air bag, and the other end of communicating pipe (17) is connected with the air inlet of annular air bag (11), the gas outlet of annular air bag (11) is connected with gas release pipe (19).

2. The emergency surgical neck fixation device of claim 1, wherein: the inner wall of the spherical groove (4) is provided with an elastic layer, and the elastic layer is one of a spongy cushion, a flexible rubber pad and a memory spongy layer.

3. The emergency surgical neck fixation device of claim 1, wherein: the lifting adjusting mechanism comprises a cavity (5) arranged inside the support (2), an external thread rod (6) is vertically arranged at the center inside the cavity (5), the bottom end of the external thread rod (6) is rotatably connected with the inner bottom of the support (2), the top end of the external thread rod (6) is used for observing the upper side wall of the support (2), the external thread rod (6) is connected with a lifting slide seat (7) in a threaded manner, the right side wall of the support (2) is provided with an opening, the lifting slide seat (7) penetrates through the opening and is fixedly connected with the head fixing plate (3), limiting rods (8) are vertically fixed at two sides of the external thread rod (6) inside the cavity (5), the lifting slide seat (7) is provided with two through holes, the two limiting rods (8) are respectively inserted into the two through holes, and the top end of the external thread rod (6) penetrates through the upper side wall of the support (2), and the top end of the external thread rod (6) is fixed with an adjusting wheel (9).

4. The emergency surgical neck fixation device of claim 1, wherein: the outer wall of the limiting rod (8) is coated with a smooth coating.

5. The emergency surgical neck fixation device of claim 1, wherein: a plurality of elastic cushions (12) are pasted on the inner peripheral wall of the annular air bag (11), and the elastic cushions (12) are distributed annularly.

6. The emergency surgical neck fixation device of claim 1, wherein: the pressing and inflating mechanism (14) comprises a shell (141), a cylindrical inflating air bag (144) is arranged inside the shell (141) along the length direction of the shell, a first extrusion positioning block (142) and a second extrusion positioning block (143) are arranged inside the shell (141) from top to bottom, the first extrusion positioning block (142) and the second extrusion positioning block (143) are arranged oppositely, arc-shaped grooves are formed in the side walls of the first extrusion positioning block (142) and the second extrusion positioning block (143) opposite to each other, the inflating air bag is a cylindrical inflating air bag (144), the cylindrical inflating air bag (144) is bonded in the arc-shaped grooves of the first extrusion positioning block (142) and the second extrusion positioning block (143), a plurality of groups of stretching springs (145) are fixed between the upper side wall of the first extrusion positioning block (142), the lower side wall of the second extrusion positioning block (143) and the upper and lower inner wall of the shell (141), the upper side wall and the lower side wall of the shell (141) are respectively provided with a limiting through hole (147), the insides of the two limiting through holes (147) are respectively inserted with a squeezing rod (146), the two squeezing rods (146) are respectively fixedly connected with a first squeezing positioning block (142) and a second squeezing positioning block (143), and one end of each squeezing rod (146) positioned outside the shell (141) is fixedly connected with a squeezing block (148).

7. The emergency surgical neck fixation device of claim 1, wherein: the outer surface of the extrusion block (148) is provided with a pressing groove, the pressing groove is spherical, and the inner wall of the pressing groove is carved with anti-skid grains.

8. The emergency surgical neck fixation device of claim 1, wherein: a plurality of spherical grooves (20) are formed in the inner wall of the extrusion block (148), the spherical grooves (20) are distributed in an annular mode, balls (21) are filled in the spherical grooves (20), and the balls (21) are attached to the outer wall of the extrusion rod (146).

Technical Field

The invention relates to the technical field of medical instruments, in particular to a neck fixing device for emergency surgery.

Background

Surgery is a science for researching the occurrence, development law and clinical manifestations, diagnosis, prevention and treatment of surgical diseases, and is a professional department taking surgical excision and repair as main treatment means. Surgery has advanced significantly with the application of microsurgical techniques. The special setting principle of each hospital surgery is similar to that of the internal medicine, and generally corresponds to the internal medicine. Surgical diseases are divided into five major groups: trauma, infection, tumor, deformity and dysfunction.

Clinical surgery has a definite division of work according to different treatment targets, and can be classified into general surgery (referring to abdominal cavity, breast, thyroid and simple skin surgery), cardiac surgery, thoracic surgery (both of which may be referred to as cardio-thoracic surgery), vascular surgery, neurosurgery, head and neck surgery, urinary surgery, plastic surgery, orthopedic surgery (i.e., bone surgery), pediatric surgery, and transplant surgery. The broad surgical discipline may also include ophthalmology, otorhinolaryngology, gynecology, dentistry (oro-caval jaw surgery), and the like.

In emergency surgery department's room, often need use neck fixing device to fix postoperative patient's neck, current neck fixing device is mostly simple structure, has the shortcoming that fixed effect is poor, be not convenient for adjust, and uses for a long time and cause the patient to be uncomfortable easily.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide an emergency surgery neck fixing device which can realize the rapid fixing of the neck of a user by utilizing an annular air bag and the auxiliary positioning of the head of the user, has good fixing effect, can realize the adjustment of the positioning tightness by adjusting the annular air bag, and can effectively avoid the discomfort caused by long-time use.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A neck fixing device for emergency surgery comprises a neck fixing frame and a head fixing plate, wherein a spherical groove is formed in the lower surface of the head fixing plate, the center of the spherical groove and the center of the neck fixing frame are located on the same straight line, a vertically arranged support is fixed on the upper side wall of the neck fixing frame, a lifting adjusting mechanism is arranged inside the support and used for adjusting the upper position and the lower position of the head fixing plate, the neck fixing frame comprises an annular fixing frame and an annular air bag, an annular groove matched with the thickness of the annular air bag is formed in the inner peripheral wall of the annular fixing frame, the annular air bag is clamped in the annular groove, a connecting pipe is fixedly connected to the side wall, away from the support, of the annular fixing frame, a pressing and inflating mechanism is connected to the end portion of the connecting pipe, an inflating air bag is arranged inside the pressing and inflating mechanism, and an air inlet pipe is connected to the side wall, away from the annular fixing frame, of the pressing and inflating mechanism, the air inlet pipe is connected with the air inlet of the inflatable airbag, a first one-way valve is arranged on the air inlet pipe, a communicating pipe is connected to one side wall, close to the annular fixing frame, of the pressing inflating mechanism, the communicating pipe penetrates through the connecting pipe, a second one-way valve is arranged on the communicating pipe, one end of the communicating pipe is connected with the air outlet of the inflatable airbag, the other end of the communicating pipe is connected with the air inlet of the annular airbag, and the air outlet of the annular airbag is connected with an air discharging pipe. When using fixing device, overlap the neck at the user with annular gasbag, utilize to press and press the inflation mechanism to inflate annular gasbag and make annular gasbag inflation, make the annular gasbag fully overlap in the user's the neck outside, thereby realize carrying out abundant fixed to the neck, can not produce the skew phenomenon, guarantee fixed effect, utilize the position of lift adjustment mechanism down-regulation head fixed plate, make head fixed plate and user top of the head contact, thereby can effectively fix a position user's head, can realize adjusting the elasticity of location through adjustable annular gasbag, further promotion neck location effect, can also effectively avoid the discomfort that long-time use produced, when the device is taken off to needs, move the head fixed plate on earlier, reuse the gas release pipe makes annular gasbag exhaust, take off whole device can, high durability and convenient use.

Furthermore, an elastic layer is arranged on the inner wall of the spherical groove, and the elastic layer is one of a spongy cushion, a flexible rubber pad and a memory spongy layer. The elastic layer is arranged on the inner wall of the spherical groove, so that discomfort caused by head extrusion in long-time positioning can be effectively avoided.

Further, lift adjustment mechanism is including seting up the inside cavity in support, the vertical external screw thread pole that is equipped with of inside center department of cavity, the bottom of external screw thread pole is rotated with the interior bottom of support and is connected, the side wall setting of going up of support is observed on the top of external screw thread pole, threaded connection has the lift slide on the external screw thread pole, the opening has been seted up on the right side wall of support, and the lift slide runs through opening and head fixed plate fixed connection, the inside of cavity is located the vertical spacing pole that is fixed with in both sides of external screw thread pole, two through-holes have been seted up on the lift slide, and two gag lever posts peg graft respectively in two through-holes, the side wall setting of going up of support is run through to the top of external screw thread pole, and the top of external screw thread pole is fixed with the regulating wheel. When the position of the head fixing plate is adjusted, the external threaded rod is rotated through the adjusting wheel, and the lifting slide seat is in threaded connection with the external threaded rod and is provided with the limiting rod to position the lifting slide seat in the vertical direction, so that the position of the head fixing plate can be conveniently adjusted.

Furthermore, the outer wall of the limiting rod is coated with a smooth coating. The smooth coating that coats on the gag lever post outer wall receives the frictional resistance of gag lever post when reduction lift slide that can be great reciprocates, guarantees the smooth and easy nature that the lift slide reciprocated.

Furthermore, a plurality of elastic cushions are pasted on the inner peripheral wall of the annular air bag and are distributed annularly. Set up the cushion on the inner wall of annular gasbag, can effectively reduce the discomfort that long-time fixed annular gasbag caused to user's neck overstock.

Furthermore, the pressing and inflating mechanism comprises a shell, a cylindrical inflating airbag is arranged in the shell along the length direction of the shell, a first extrusion positioning block and a second extrusion positioning block are arranged in the shell from top to bottom, the first extrusion positioning block and the second extrusion positioning block are arranged oppositely, arc-shaped grooves are formed in the side walls of the first extrusion positioning block and the second extrusion positioning block, the inflating airbag is a cylindrical inflating airbag, the cylindrical inflating airbag is bonded in the arc-shaped grooves of the first extrusion positioning block and the second extrusion positioning block, a plurality of groups of stretching springs are fixed between the lower side walls of the first extrusion positioning block and the second extrusion positioning block and the upper inner wall and the lower inner wall of the shell, limiting through holes are formed in the upper side wall and the lower side wall of the shell, an extruding rod is inserted in each of the two limiting through holes, and the two extruding rods are respectively and fixedly connected with the first extrusion positioning block and the second extrusion positioning block, one end of the extrusion rod, which is positioned outside the shell, is fixedly connected with an extrusion block. When needs aerify, the extrusion piece is inside towards shell extrusion stem, impresses the inside air of the gasbag is aerifyd to the cylindricality inside the annular gasbag, can aerify, after loosening the extrusion piece, the gasbag is aerifyd to the cylindricality resets fast under extension spring's restoring force effect, continues to realize continuous aerifing towards the inside extrusion stem of pressing of shell, simple structure, the operation of being convenient for.

Furthermore, the outer surface of the extrusion block is provided with a pressing groove, the pressing groove is spherical, and the inner wall of the pressing groove is carved with anti-skid grains. The pressing groove in a spherical shape is formed in the extrusion block, so that a user can conveniently inflate the air bag.

Furthermore, a plurality of spherical grooves are formed in the inner wall of the extrusion block and distributed in an annular shape, balls are filled in the spherical grooves, and the balls are attached to the outer wall of the extrusion rod. Set up spherical groove and ball, the frictional resistance that receives when reduction extrusion stem round trip movement that can be great, for the inflation process is laborsaving.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme can realize utilizing the quick neck to the user of annular gasbag to fix to carry out assistance-localization real-time to user's head, fixed effectual can realize adjusting the elasticity of location through adjusting annular gasbag, can effectively avoid the discomfort that long-time use produced.

(2) The elastic layer is arranged on the inner wall of the spherical groove, so that discomfort caused by head extrusion in long-time positioning can be effectively avoided.

(3) When the position of the head fixing plate is adjusted, the external threaded rod is rotated through the adjusting wheel, and the lifting slide seat is in threaded connection with the external threaded rod and is provided with the limiting rod to position the lifting slide seat in the vertical direction, so that the position of the head fixing plate can be conveniently adjusted.

(4) The smooth coating that coats on the gag lever post outer wall receives the frictional resistance of gag lever post when reduction lift slide that can be great reciprocates, guarantees the smooth and easy nature that the lift slide reciprocated.

(5) Set up the cushion on the inner wall of annular gasbag, can effectively reduce the discomfort that long-time fixed annular gasbag caused to user's neck overstock.

(6) When needs aerify, the extrusion piece is inside towards shell extrusion stem, impresses the inside air of the gasbag is aerifyd to the cylindricality inside the annular gasbag, can aerify, after loosening the extrusion piece, the gasbag is aerifyd to the cylindricality resets fast under extension spring's restoring force effect, continues to realize continuous aerifing towards the inside extrusion stem of pressing of shell, simple structure, the operation of being convenient for.

(7) The pressing groove in a spherical shape is formed in the extrusion block, so that a user can conveniently inflate the air bag.

(8) Set up spherical groove and ball, the frictional resistance that receives when reduction extrusion stem round trip movement that can be great, for the inflation process is laborsaving.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the neck fixing frame of the present invention;

FIG. 3 is a cross-sectional view of the neck mount of the present invention;

FIG. 4 is a side view of the push-to-inflate mechanism of the present invention;

fig. 5 is an enlarged view of a portion a in fig. 4.

The reference numbers in the figures illustrate:

the device comprises a neck fixing frame 1, a support 2, a head fixing plate 3, a spherical groove 4, a cavity 5, an external thread rod 6, a lifting slide seat 7, a limiting rod 8, an adjusting wheel 9, an annular fixing frame 10, an annular air bag 11, an elastic cushion 12, a connecting pipe 13, a pressing and inflating mechanism 14, a shell 141, a first extrusion positioning block 142, a second extrusion positioning block 143, a cylindrical inflation air bag 144, a tension spring 145, an extrusion rod 146, a limiting through hole 147, an extrusion block 148, an air inlet pipe 15, a first check valve 16, a communicating pipe 17, a second check valve 18, an air outlet pipe 19, a spherical groove 20 and a ball 21.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-3, a neck fixing device for emergency surgery comprises a neck fixing frame 1 and a head fixing plate 3, wherein a spherical groove 4 is formed on the lower surface of the head fixing plate 3, the center of the spherical groove 4 and the center of the neck fixing frame 1 are positioned on the same straight line, a vertically arranged support 2 is fixed on the upper side wall of the neck fixing frame 1, a lifting adjusting mechanism is arranged inside the support 2 and used for adjusting the upper and lower positions of the head fixing plate 3, the neck fixing frame 1 comprises an annular fixing frame 10 and an annular air bag 11, an annular groove matched with the thickness of the annular air bag 11 is formed on the inner peripheral wall of the annular fixing frame 10, the annular air bag 11 is clamped in the annular groove, a connecting pipe 13 is fixedly connected on the side wall of the annular fixing frame 10 far away from the support 2, a pressing and inflating mechanism 14 is connected to the end of the connecting pipe 13, and an inflating air bag is arranged inside the pressing and inflating mechanism 14, the side wall of the pressing and inflating mechanism 14 far away from the annular fixing frame 10 is connected with an air inlet pipe 15, the air inlet pipe 15 is connected with an air inlet of an inflating air bag, the air inlet pipe 15 is provided with a first one-way valve 16, the side wall of one side of the pressing and inflating mechanism 14 close to the annular fixing frame 10 is connected with a communicating pipe 17, the communicating pipe 17 penetrates through the connecting pipe 13, the communicating pipe 17 is provided with a second one-way valve 18, one end of the communicating pipe 17 is connected with an air outlet of the inflating air bag, the other end of the communicating pipe 17 is connected with the air inlet of the annular air bag 11, and the air outlet of the annular air bag 11 is connected with an air discharging pipe 19. When the fixing device is used, the annular air bag 11 is sleeved on the neck of a user, the annular air bag 11 is inflated by the pressing and inflating mechanism 14 to expand the annular air bag 11, so that the annular air bag 11 is fully sleeved on the outer side of the neck of the user, thereby realizing the full fixation of the neck, avoiding the offset phenomenon and ensuring the fixation effect, utilizing the lifting adjusting mechanism to lower the position of the head fixing plate 3 to ensure that the head fixing plate 3 is contacted with the top of the head of a user, thereby effectively positioning the head of a user, adjusting the positioning tightness by adjusting the annular air bag 11, further improving the positioning effect of the neck, effectively avoiding discomfort caused by long-time use, when the device needs to be taken down, the head fixing plate 3 is moved upwards, the annular air bag 11 is exhausted by using the air exhaust pipe 19, and the whole device is taken down, so that the use is convenient.

Referring to fig. 1, an elastic layer is disposed on an inner wall of the spherical groove 4, and the elastic layer is one of a sponge mat, a flexible rubber mat, and a memory sponge layer. Set up the elastic layer on 4 inner walls in spherical groove, can effectively avoid causing the discomfort to the extrusion of head in long-time location.

Referring to fig. 1, the lifting adjusting mechanism includes a cavity 5 formed in the support 2, an external screw rod 6 is vertically disposed at the center of the interior of the cavity 5, the bottom end of the external screw rod 6 is rotatably connected to the inner bottom of the support 2, the top end of the external screw rod 6 is used for observing the upper side wall of the support 2, a lifting slide 7 is threadedly connected to the external screw rod 6, an opening is formed in the right side wall of the support 2, the lifting slide 7 penetrates through the opening and is fixedly connected to the head fixing plate 3, limiting rods 8 are vertically fixed to two sides of the external screw rod 6 in the cavity 5, two through holes are formed in the lifting slide 7, the two limiting rods 8 are respectively inserted into the two through holes, the top end of the external screw rod 6 penetrates through the upper side wall of the support 2, and an adjusting wheel 9 is fixed to the top end of the external screw rod 6. When the position of the head fixing plate 3 is adjusted, the external thread rod 6 is rotated by the adjusting wheel 9, and the lifting slide 7 is in threaded connection with the external thread rod 6, and the limiting rod 8 is provided to vertically position the lifting slide 7, so that the position of the head fixing plate 3 can be conveniently adjusted.

Referring to fig. 1, the outer wall of the stopper rod 8 is coated with a smooth coating. The smooth coating that coats on the outer wall of gag lever post 8 can be great reduction lift slide 7 receive gag lever post 8's frictional resistance when reciprocating, guarantee the smooth and easy nature that lift slide 7 reciprocated.

Referring to fig. 2, a plurality of elastic pads 12 are adhered to the inner peripheral wall of the annular airbag 11, and the plurality of elastic pads 12 are annularly distributed. The elastic cushion 12 is arranged on the inner wall of the annular air bag 11, so that discomfort caused by overstressing of the neck of a user due to the fact that the annular air bag 11 is fixed for a long time can be effectively reduced.

Referring to fig. 3-4, the pressing and inflating mechanism 14 includes a housing 141, a cylindrical inflating airbag 144 is disposed inside the housing 141 along a length direction thereof, a first squeeze positioning block 142 and a second squeeze positioning block 143 are disposed at an upper portion and a lower portion inside the housing 141, the first squeeze positioning block 142 and the second squeeze positioning block 143 are disposed opposite to each other, arc-shaped grooves are respectively formed on side walls of the first squeeze positioning block 142 and the second squeeze positioning block 143 opposite to each other, the inflating airbag is a cylindrical inflating airbag 144, the cylindrical inflating airbag 144 is bonded in the arc-shaped grooves of the first squeeze positioning block 142 and the second squeeze positioning block 143, a plurality of sets of tension springs 145 are fixed between an upper side wall of the first squeeze positioning block 142 and a lower side wall of the second squeeze positioning block 143 and an upper inner wall and a lower inner wall of the housing 141, limit through-holes 147 are respectively formed on the upper and lower side walls of the housing 141, and an extruding rod 146 is inserted into each of the two limit through-holes 147, the two extrusion rods 146 are respectively and fixedly connected with the first extrusion positioning block 142 and the second extrusion positioning block 143, and one end of the extrusion rod 146 located outside the housing 141 is fixedly connected with an extrusion block 148. When inflation is needed, the extrusion block 148 extrudes the extrusion rod 146 towards the shell 141, air in the cylindrical inflatable air bag 144 is pressed into the annular air bag 11, inflation can be conducted, after the extrusion block 148 is loosened, the cylindrical inflatable air bag 144 is quickly reset under the restoring force of the extension spring 145, continuous inflation is achieved by continuously pressing the extrusion rod 146 towards the interior of the shell 141, and the structure is simple and convenient to operate.

Referring to fig. 3-4, the outer surface of the extrusion block 148 is provided with a pressing groove, the pressing groove is spherical, and the inner wall of the pressing groove is engraved with anti-slip patterns. The pressing block 148 is provided with a spherical pressing groove for facilitating the inflation of the user.

Referring to fig. 5, a plurality of spherical grooves 20 are formed on an inner wall of the extrusion block 148, the spherical grooves 20 are distributed annularly, the spherical grooves 20 are filled with balls 21, and the balls 21 are attached to an outer wall of the extrusion rod 146. The spherical groove 20 and the ball 21 are arranged, so that the friction resistance of the extrusion rod 146 during moving back and forth can be greatly reduced, and labor is saved in the inflation process.

The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.