CN113294461A

CN113294461A - Damping brake device suitable for medical instrument rotating shaft

Info

Publication number: CN113294461A
Application number: CN202110566669.7A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-08-24

Abstract

The invention provides a damping brake device suitable for a rotating shaft of a medical instrument, relates to the technical field of damping brakes, and solves the problems that the existing braking mode used between the rotating shaft and an external shaft sleeve of the medical instrument has no warning mechanism, and medical personnel cannot be reminded in time when the brake fails due to other factors such as unstable locking and the like. The utility model provides a be applicable to medical instrument damping brake equipment for rotation axis, includes the spacing main part of rotation axis, the whole cylindric structure that is of the spacing main part of rotation axis. When the damping brake is out of order, the medical instrument rotating shaft rotates to drive the damping limiting mechanism to slide along the reciprocating limiting sliding groove, so that the warning shell rotates along the insulating sheet and deviates from the insulating sheet to exceed five degrees, at the moment, the conductive block A and the button cell are in contact with the copper conductive sheet in the opposite direction, the power supply inside the warning shell is switched on, and the buzzer makes a sound, so that medical personnel can be timely reminded, and medical accidents caused by the rotation of the damping brake out-of-order medical instrument rotating shaft are avoided.

Description

Damping brake device suitable for medical instrument rotating shaft

Technical Field

The invention belongs to the technical field of damping brakes, and particularly relates to a damping brake device suitable for a rotating shaft of a medical instrument.

Background

In medical instruments such as operating lamps, operating tables, towers and suspension bridges, the braking mode usually used between the rotating shaft and the external shaft sleeve is completed by the direct contact of the screw cylinder and the rotating shaft.

For example, application No.: the invention discloses a damping brake device for a rotating shaft of a medical instrument, which structurally comprises a fixing bolt head, an inner shaft hole, a rotating bolt body, an outer copper sleeve, an inner screw rod, a round shaft, a base plate, an adjusting screw, a wear-resistant gasket, an embedded execution rotating shaft, a spring assembly and a rubber gasket, wherein the tail part of the fixing bolt head is provided with the rotating bolt body, the rotating bolt body is fixedly connected with the outer layer of a locking bolt head through a fixing screw hole, the center of the front end of the fixing bolt head is provided with the inner shaft hole, the inner shaft hole is connected with the fixing bolt head through the small round shaft, the inner screw rod is arranged in the rotating bolt body, the round shaft and the base plate are arranged on the inner screw rod, the round shaft is connected with the inner screw rod through the base plate, the inner screw rod is in threaded connection with the extending end of the inner shaft hole through the round shaft, the spring assembly, the operation is more flexible when the medical equipment is used, and the service life of the rotating shaft is prolonged.

Retrieval based on above-mentioned patent, and combine the equipment discovery among the prior art, adopt the brake mode of the brake that the direct and rotation axis contact of cylinder accomplished, can make the life of rotation axis subtract weak point, cause transition wearing and tearing, use medical equipment to break down easily, the brake mode that uses between its rotation axis of present medical instrument and the outside axle sleeve does not have warning mechanism, when other factors such as because of locking is unstable, when the brake is malfunctioning, can not in time remind medical personnel, if during the follow-up application in-process medical instrument rotation axis takes place to rotate, very easily probably cause the medical accident.

Disclosure of Invention

In order to solve the technical problems, the invention provides a damping brake device suitable for a rotating shaft of a medical instrument, which aims to solve the problems that the service life of the rotating shaft is shortened, transitional wear is caused, and faults are easy to occur when medical equipment is used in the conventional brake mode of braking by directly contacting a screw cylinder with the rotating shaft, and the conventional brake mode used between the rotating shaft and an external shaft sleeve of the medical instrument has no warning mechanism.

The invention relates to a damping brake device for a medical instrument rotating shaft, which has the purpose and the effect and is achieved by the following specific technical means:

a damping brake device suitable for a rotating shaft of a medical instrument comprises a rotating shaft limiting main body,

the rotating shaft limiting main body is integrally cylindrical, a pressing plate is arranged on the right side of the rotating shaft limiting main body, the pressing plate is integrally square, and the size of the pressing plate is consistent with that of the right end face of the square protrusion;

the rotating shaft limiting main body comprises a square protrusion, a spring accommodating groove and a threaded screwing through hole, the right side of the outer peripheral surface of the rotating shaft limiting main body is provided with the square protrusion, the central part of the right end face of the square protrusion is provided with the threaded screwing through hole communicated with the inner peripheral surface of the rotating shaft limiting main body, the four edge included angles of the right end face of the square protrusion are provided with the spring accommodating grooves, and the spring accommodating grooves are of circular structures;

the clamp plate is including the bearing, and the embedded a set of bearing of installing in clamp plate central point, and fixed mounting has a cylinder in the bearing, and cylinder right-hand member face fixed mounting has a knob rather than with the axle center, and cylinder left side outer peripheral face is provided with the external screw thread with screw thread screw in through-hole assorted, and the cylinder passes through external screw thread threaded connection in the screw thread screw in through-hole.

Furthermore, the pressing plate comprises a reset spring, the included angle positions of the four edges of the left end face of the pressing plate are fixedly provided with a reset spring, the left ends of the four reset springs are respectively inserted into the four spring accommodating grooves, and the left ends of the reset springs are fixedly connected with the inner end planes of the spring accommodating grooves.

Further, the pressing plate comprises an arc plate and a reciprocating limiting sliding groove, the arc plate is welded at the top end of the pressing plate, the arc plate and the rotating shaft limiting main body are arranged coaxially, the middle part of the inner circumferential surface of the arc plate is provided with the reciprocating limiting sliding groove along the contour line of the arc plate, the longitudinal section of the reciprocating limiting sliding groove is of an isosceles trapezoid structure, and the reciprocating limiting sliding groove is higher than the top end face of the rotating shaft limiting main body.

Further, the clamp plate is including arc dog, insulating piece and copper conducting strip, and the symmetry form is provided with two arc dogs around clamp plate inner peripheral surface middle part is, is provided with an insulating piece between two arc dogs, and the insulating piece is the arc structure, and it sets up with the axle center with the spacing main part of rotation axis, and the symmetry form is embedded installs two copper conducting strips around being on the insulating piece, does not contact between two copper conducting strips, and the copper conducting strip also is the arc structure, and also its sets up with the axle center with the spacing main part of rotation axis.

Further, damping stop gear is including warning casing, spacing reciprocating block and the spacing ball of supplementary slip, the warning casing is whole to be arc massive structure, warning casing and the coaxial axle center setting of the spacing main part of rotation axis, warning casing outer peripheral face is provided with a spacing reciprocating block, spacing reciprocating block is arc massive structure, and spacing reciprocating block longitudinal section is isosceles trapezoid structure, spacing reciprocating block both sides terminal surface and outer peripheral face all are each embedded rotation of evenly distributed form and install three spacing balls of supplementary slip, spacing reciprocating block longitudinal section size is less than the spacing spout longitudinal section size of reciprocal, spacing reciprocating block is located reciprocal spacing spout, the spacing ball of supplementary slip contacts with terminal surface sliding in the reciprocal spacing spout.

Further, damping stop gear is including bee calling organ, conducting block A, button cell, conducting block B and circuit spring, inside bee calling organ of installing in proper order of damping stop gear, conducting block A, button cell, conducting block B and circuit spring, conducting block A and conducting block B all are connected with bee calling organ pipe foot through the wire, under the ordinary extension state of circuit spring, conducting block A, button cell, conducting block B and circuit spring are in the state of contacting in proper order, damping stop gear preceding terminal surface and rear end face have seted up a department for conducting block A and button cell contact position jointly and have link up the slot, and link up the slot and be the arc structure, and it sets up with the same axle center with the spacing main part of rotation axis.

Furthermore, when the warning shell is located at the right middle part of the right side, the insulating sheet is inserted into the through slot in a sliding mode, the conducting block A and the button cell are not in contact with the two copper conducting sheets, and when the warning shell rotates along the insulating sheet and deviates by five angles, the conducting block A and the button cell are in contact with the copper conducting sheets in the opposite direction.

Furthermore, damping stop gear is including supporting board, connecting rod and damping piece, and warning casing left side is provided with supports the board, supports the whole arc massive structure that is of board, supports the board and sets up with the axle center with the spacing main part of rotation axis, supports and is connected through two connecting rods that are the symmetric form and distribute between board and the warning casing fixedly, supports that the inboard peripheral surface bonds and has the one deck damping piece, and the damping piece is the arc massive structure, and the damping piece sets up with the axle center with the spacing main part of rotation axis.

Compared with the prior art, the invention has the following beneficial effects:

the bearing converts cylindrical rotary motion into linear motion, pushes the pressing plate to gradually approach the square bulge, and enables the damping block in the damping limiting mechanism to gradually approach the outer peripheral surface of the rotating shaft of the medical instrument.

The invention discloses a medical warning device, which comprises a rotary shaft limiting main body, a through slot, a warning shell, a conductive block A, a button battery, a buzzer, a reciprocating limiting chute, a power supply and a power supply.

Drawings

Fig. 1 is a schematic front view of the brake device in the non-braking state.

Fig. 2 is a partially enlarged structural schematic diagram of the damping limiting mechanism of the present invention in an installation state.

FIG. 3 is a schematic top view of the brake device in the non-braking state.

Fig. 4 is a schematic view of the present invention at a part enlarged in fig. 3.

Fig. 5 is a schematic sectional view of the reciprocating limiting chute of fig. 4 according to the present invention.

Fig. 6 is a schematic structural view of the damping limiting mechanism in fig. 4 in a state of being removed.

Fig. 7 is a partial sectional enlarged structural schematic view of the cylindrical portion of the present invention.

Fig. 8 is a cross-sectional partially enlarged structural schematic view of the damping limiting mechanism of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a rotating shaft limiting main body; 101. a square bulge; 102. a spring receiving recess; 103. screwing the screw thread into the through hole; 2. pressing a plate; 201. an arc-shaped plate; 202. a return spring; 203. an arc-shaped stop block; 204. an insulating sheet; 205. a copper conductive sheet; 206. a reciprocating limit chute; 207. a bearing; 3. a knob; 301. a cylinder; 302. an external thread; 4. a damping limiting mechanism; 401. a warning housing; 402. a resisting plate; 403. a connecting rod; 404. a damping block; 405. a limiting reciprocating slide block; 406. auxiliary sliding limiting balls; 407. a buzzer; 408. a conductive block A; 409. a button cell; 4010. a conductive block B; 4011. and a circuit spring.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 8:

the invention provides a damping brake device suitable for a medical instrument rotating shaft, which comprises: the rotary shaft limiting device comprises a rotary shaft limiting main body 1, wherein the whole rotary shaft limiting main body 1 is of a cylindrical structure, a pressing plate 2 is arranged on the right side of the rotary shaft limiting main body, the whole pressing plate 2 is of a square structure, and the size of the pressing plate 2 is consistent with that of the right end face of a square protrusion 101; the rotating shaft limiting main body 1 comprises a square protrusion 101, a spring accommodating groove 102 and a threaded screwing through hole 103, the right side of the outer peripheral surface of the rotating shaft limiting main body 1 is provided with the square protrusion 101, the center of the right end face of the square protrusion 101 is provided with the threaded screwing through hole 103 communicated with the inner peripheral surface of the rotating shaft limiting main body 1, the four edge included angles of the right end face of the square protrusion 101 are provided with the spring accommodating grooves 102, and the spring accommodating grooves 102 are of a circular structure; the pressing plate 2 comprises a bearing 207, a group of bearings 207 is embedded in the center of the pressing plate 2, a cylinder 301 is fixedly installed in the bearing 207, a knob 3 which is coaxial with the cylinder 301 is fixedly installed on the right end face of the cylinder 301, an external thread 302 matched with the threaded through hole 103 is arranged on the outer peripheral surface of the left side of the cylinder 301, and the cylinder 301 is connected in the threaded through hole 103 through the external thread 302; the pressure plate 2 comprises a return spring 202, the included angle positions of the four edges of the left end surface of the pressure plate 2 are fixedly provided with one return spring 202, the left ends of the four return springs 202 are respectively inserted into the four spring receiving grooves 102, and the left ends of the return springs 202 are fixedly connected with the inner end planes of the spring receiving grooves 102; the pressing plate 2 comprises an arc-shaped plate 201 and a reciprocating limiting sliding groove 206, the top end of the pressing plate 2 is welded with the arc-shaped plate 201, the arc-shaped plate 201 and the rotating shaft limiting main body 1 are arranged coaxially, the middle part of the inner circumferential surface of the arc-shaped plate 201 is provided with the reciprocating limiting sliding groove 206 along the contour line thereof, the longitudinal section of the reciprocating limiting sliding groove 206 is in an isosceles trapezoid structure, and the reciprocating limiting sliding groove 206 is higher than the top end face of the rotating shaft limiting main body 1; pressing plate 2 is including arc dog 203, insulating piece 204 and copper conducting strip 205, the symmetry form is provided with two arc dogs 203 around 2 inner peripheral surfaces middle parts of pressing plate, be provided with an insulating piece 204 between two arc dogs 203, insulating piece 204 is the arc structure, and it sets up with the axle center with the spacing main part 1 of rotation axis, be embedded two copper conducting strips 205 of installing of symmetry form around being on the insulating piece 204, do not contact between two copper conducting strips 205, copper conducting strip 205 also is the arc structure, and also it sets up with the axle center with the spacing main part 1 of rotation axis.

The damping limiting mechanism 4 comprises a warning shell 401, a limiting reciprocating slide block 405 and auxiliary sliding limiting balls 406, the warning shell 401 is integrally of an arc-shaped block structure, the warning shell 401 and the rotating shaft limiting main body 1 are coaxially arranged, the outer peripheral surface of the warning shell 401 is provided with the limiting reciprocating slide block 405, the limiting reciprocating slide block 405 is of an arc-shaped block structure, the longitudinal section of the limiting reciprocating slide block 405 is of an isosceles trapezoid structure, the end surfaces and the outer peripheral surface of two sides of the limiting reciprocating slide block 405 are uniformly distributed, three auxiliary sliding limiting balls 406 are respectively embedded and rotatably installed on the end surfaces and the outer peripheral surface of two sides of the limiting reciprocating slide block 405, the longitudinal section size of the limiting reciprocating slide block 405 is smaller than that of the reciprocating limiting slide groove 206, the limiting reciprocating slide block 405 is located in the reciprocating limiting; the damping limiting mechanism 4 comprises a buzzer 407, a conductive block A408, a button battery 409, a conductive block B4010 and a circuit spring 4011, the buzzer 407, the conductive block A408, the button battery 409, the conductive block B4010 and the circuit spring 4011 are sequentially installed inside the damping limiting mechanism 4, the conductive block A408 and the conductive block B4010 are connected with a base pin of the buzzer 407 through leads, the conductive block A408, the button battery 409, the conductive block B4010 and the circuit spring 4011 are in a sequential contact state under a common extension state of the circuit spring 4011, a through slot is jointly formed in the front end face and the rear end face of the damping limiting mechanism 4 relative to the contact portion of the conductive block A408 and the button battery 409, the through slot is of an arc-shaped structure and is coaxially arranged with the rotating shaft limiting main body 1; when the warning shell 401 is located at the right lateral middle position, the insulating sheet 204 is inserted into the through slot in a sliding mode, the conductive block A408 and the button cell 409 are not in contact with the two copper conductive sheets 205, and when the warning shell 401 rotates along the insulating sheet 204 and deviates from five angles, the conductive block A408 and the button cell 409 are in contact with the copper conductive sheets 205 in the opposite direction; the damping limiting mechanism 4 comprises a supporting plate 402, connecting rods 403 and damping blocks 404, the supporting plate 402 is arranged on the left side of the warning shell 401, the supporting plate 402 is integrally of an arc-shaped block structure, the supporting plate 402 and the rotating shaft limiting main body 1 are coaxially arranged, the supporting plate 402 and the warning shell 401 are fixedly connected through the two connecting rods 403 which are symmetrically distributed, the damping blocks 404 are bonded on the inner circumferential surface of the supporting plate 402, the damping blocks 404 are of the arc-shaped block structure, and the damping blocks 404 and the rotating shaft limiting main body 1 are coaxially arranged.

When in use:

the whole rotating shaft limiting main body 1 is of a cylindrical structure and is sleeved on a rotating shaft of a medical instrument, the rotating shaft limiting main body 1 and the medical instrument main body are fixedly installed, when the rotating shaft of the medical instrument is braked, firstly, the cylinder 301 is rotated through the knob 3, and because the cylinder 301 is connected with the pressing plate 2 through the bearing 207, when the cylinder 301 is rotated, the bearing 207 converts the rotary motion of the cylinder 301 into linear motion so as to push the pressing plate 2 to gradually approach the square bulge 101, and meanwhile, the return spring 202 between the square bulge 101 and the pressing plate 2 is gradually compressed;

in the process that the bearing 207 converts the rotary motion of the cylinder 301 into linear motion so as to push the pressure plate 2 to gradually approach the square bulge 101, the damping block 404 in the damping limiting mechanism 4 gradually approaches the outer peripheral surface of the rotating shaft of the medical instrument, and because the damping block 404 is in an arc-shaped block structure and the damping block 404 and the rotating shaft limiting main body 1 are coaxially arranged, the damping block 404 is tightly attached to the outer peripheral surface of the rotating shaft of the medical instrument in the process that the pressure plate 2 gradually approaches the square bulge 101, so that the damping block 404 performs damping brake operation on the rotating shaft of the medical instrument;

the insulation sheet 204 is inserted in the through slot in a sliding manner, when the warning shell 401 is positioned at the right middle part of the right side, the conductive block A408 and the button cell 409 are not in contact with the two copper conductive sheets 205, at the moment, the inside of the warning shell 401 is in a power supply closed state, when the damping brake is failed, the medical device rotating shaft rotates to drive the damping limiting mechanism 4 to slide along the reciprocating limiting sliding groove 206, so that when the warning shell 401 rotates along the insulation sheet 204 and deviates by more than five degrees, the conductive block A408 and the button cell 409 are in contact with the copper conductive sheets 205 in the opposite direction, the power supply in the warning shell 401 is switched on, and the buzzer 407 makes a sound, thereby reminding medical personnel in time and avoiding medical accidents caused by the rotation of the damping brake failure medical device rotating shaft.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a be applicable to damping brake equipment for medical instrument rotation axis which characterized in that: comprises a rotating shaft limiting main body (1),

the rotating shaft limiting main body (1) is integrally cylindrical, a pressing plate (2) is arranged on the right side of the rotating shaft limiting main body, the pressing plate (2) is integrally square, and the size of the pressing plate is consistent with that of the right end face of the square bulge (101);

the rotating shaft limiting main body (1) comprises a square protrusion (101), spring accommodating grooves (102) and a threaded screwing through hole (103), the square protrusion (101) is arranged on the right side of the outer peripheral surface of the rotating shaft limiting main body (1), the threaded screwing through hole (103) communicated with the inner peripheral surface of the rotating shaft limiting main body (1) is formed in the center of the right end face of the square protrusion (101), the spring accommodating grooves (102) are formed in the four edge included angles of the right end face of the square protrusion (101), and the spring accommodating grooves (102) are of a circular structure;

the pressing plate (2) comprises a bearing (207), a group of bearings (207) is embedded in the center of the pressing plate (2), a cylinder (301) is fixedly installed in the bearing (207), a knob (3) which is coaxial with the cylinder (301) is fixedly installed on the right end face of the cylinder (301), external threads (302) matched with the threaded screwing through hole (103) are arranged on the outer peripheral face of the left side of the cylinder (301), and the cylinder (301) is connected in the threaded screwing through hole (103) through the external threads (302) in a threaded mode.

2. The damping brake device for the rotating shaft of the medical instrument as claimed in claim 1, wherein: the pressing plate (2) comprises reset springs (202), the edge included angle positions of the four positions of the left end face of the pressing plate (2) are fixedly provided with one reset spring (202), the left ends of the four reset springs (202) are respectively inserted into the spring accommodating grooves (102), and the left ends of the reset springs (202) are fixedly connected with the inner end plane of the spring accommodating grooves (102).

3. The damping brake device for the rotating shaft of the medical instrument as claimed in claim 1, wherein: the pressing plate (2) comprises an arc plate (201) and a reciprocating limiting sliding groove (206), the top end of the pressing plate (2) is welded with the arc plate (201), the arc plate (201) and the rotating shaft limiting main body (1) are arranged coaxially, the middle part of the inner circumferential surface of the arc plate (201) is provided with the reciprocating limiting sliding groove (206) along the contour line of the arc plate, the longitudinal section of the reciprocating limiting sliding groove (206) is of an isosceles trapezoid structure, and the reciprocating limiting sliding groove (206) is higher than the top end face of the rotating shaft limiting main body (1).

4. The damping brake device for the rotating shaft of the medical instrument as claimed in claim 1, wherein: clamp plate (2) are including arc dog (203), insulating piece (204) and copper conducting strip (205), the symmetry form is provided with two arc dog (203) around clamp plate (2) inner peripheral surface middle part is, be provided with an insulating piece (204) between two arc dog (203), insulating piece (204) are the arc structure, and it sets up with the axle center with the spacing main part of rotation axis (1), be embedded two copper conducting strip (205) of installing of symmetry form around being on insulating piece (204), do not contact between two copper conducting strip (205), copper conducting strip (205) also are the arc structure, and also it sets up with the axle center with the spacing main part of rotation axis (1).

5. The damping brake device for the rotating shaft of the medical instrument as claimed in claim 1, wherein: the damping limiting mechanism (4) comprises a warning shell (401), a limiting reciprocating slide block (405) and an auxiliary sliding limiting ball (406), the warning shell (401) is integrally of an arc-shaped block structure, the warning shell (401) and the rotating shaft limiting main body (1) are coaxially arranged, the limiting reciprocating slide block (405) is arranged on the outer peripheral surface of the warning shell (401), the limiting reciprocating slide block (405) is of an arc-shaped block structure, and the longitudinal section of the limiting reciprocating slide block (405) is of an isosceles trapezoid structure, the end faces and the outer peripheral surfaces of two sides of the limiting reciprocating slide block (405) are uniformly distributed and are respectively embedded with three auxiliary sliding limiting balls (406) in a rotating mode, the longitudinal section size of the limiting reciprocating slide block (405) is smaller than that of the reciprocating limiting slide groove (206), the limiting reciprocating slide block (405) is located in the reciprocating limiting slide groove (206), and the auxiliary sliding limiting balls (406) are in sliding contact with the inner end face of the reciprocating limiting slide groove (206).

6. The damping brake device for the rotating shaft of the medical instrument as claimed in claim 1, wherein: the damping limiting mechanism (4) comprises a buzzer (407), a conductive block A (408), a button battery (409), a conductive block B (4010) and a circuit spring (4011), wherein the buzzer (407), the conductive block A (408), the button battery (409), the conductive block B (4010) and the circuit spring (4011) are sequentially installed inside the damping limiting mechanism (4), the conductive block A (408) and the conductive block B (4010) are connected with pins of the buzzer (407) through leads, the conductive block A (408), the button battery (409), the conductive block B (4010) and the circuit spring (4011) are in sequential contact states under a common stretching state of the circuit spring (4011), a through slot is jointly formed in the front end face and the rear end face of the damping limiting mechanism (4) relative to the contact positions of the conductive block A (408) and the button battery (409), and the through slot is of an arc-shaped structure, and is arranged coaxially with the rotation shaft limiting main body (1).

7. The damping brake device for the rotating shaft of the medical instrument as claimed in claim 5, wherein: when the warning shell (401) is located at the right side middle position, the insulating sheet (204) is inserted into the through slot in a sliding mode, the conducting block A (408) and the button cell (409) are not in contact with the two copper conducting sheets (205), and when the warning shell (401) rotates and deviates by five angles along the insulating sheet (204), the conducting block A (408) and the button cell (409) are in contact with the copper conducting sheets (205) in the opposite direction.

8. The damping brake device for the rotating shaft of the medical instrument as claimed in claim 1, wherein: damping stop gear (4) are including supporting board (402), connecting rod (403) and damping piece (404), warning casing (401) left side is provided with supporting board (402), supporting board (402) wholly is the arc massive structure, supporting board (402) and the spacing main part of rotation axis (1) are with the axle center setting, support between board (402) and the warning casing (401) through two connecting rod (403) that are the symmetric form and distribute fixed being connected, it has one deck damping piece (404) to support board (402) inner peripheral surface bonding, damping piece (404) are the arc massive structure, and damping piece (404) and the spacing main part of rotation axis (1) are with the axle center setting.