CN213525416U

CN213525416U - Pressurization formula protective sheath

Info

Publication number: CN213525416U
Application number: CN202021718187.6U
Authority: CN
Inventors: 冯欢欢
Original assignee: Taicang Traditional Chinese Medicine Hospital
Current assignee: Taicang Traditional Chinese Medicine Hospital
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-06-25
Anticipated expiration: 2030-08-18

Abstract

The utility model discloses a pressurized protective sleeve, which comprises a shell, an inner ring and an elastic device; the elastic device is connected between the shell and the inner ring, and the elastic device has a pressurizing effect towards the axis direction on the inner ring. The pressurized protective sleeve of the utility model can be sleeved on the two ends of the kirschner wire used for bone traction, the positioning pin of the osteotomy template used for osteotomy of knee joint and other replacement operations or other points with requirements, and after the pressurized protective sleeve is sleeved on the point, the pressurized protective sleeve plays a role in protecting the point; the pressurizing action of the elastic device on the inner ring in the axial direction enables the inner ring to have continuous extrusion force on the tip end, so that the protective sleeve and the tip end cannot perform axial relative motion, and the traction bow limited by the protective sleeve or the osteotomy template is prevented from slipping; pressurization formula protective sheath structural design ingenious reasonable, strong adaptability, the protective properties is good, the antiskid moves effectually, can improve the security that the bone was pull and was cut the bone operation.

Description

Pressurization formula protective sheath

Technical Field

The utility model belongs to the technical field of medical instrument, in particular to pressurization formula protective sheath with protection and antiskid effect of moving.

Background

The two ends of the Kirschner wire used for bone traction need to be protected to avoid scratching people, objects and the like; when a bone is cut in a replacement operation such as a knee joint, the bone cutting template is fixed to a tibia with a positioning pin, but the bone cutting template is displaced in the direction of the positioning pin by vibration generated by an electric saw. At present, protective sleeves are adopted at two ends of a Kirschner wire to play roles of avoiding stabbing and stabbing, and the end of a forceps holder such as a vascular forceps is usually adopted for an osteotomy template for knee joint replacement. The protective sleeve designed by the traction bow only has a protective function, does not have a holding force, does not have a function of blocking and preventing displacement, and has the possibility of loosening and falling after long-term use. The stability of the tail end of the clamp in the joint replacement operation is poor, and the clamp is easy to slip and even fall off, so that the operation process is influenced. Meanwhile, other places needing to prevent the sliding and protecting the tip end need a device with both protection and sliding prevention.

Therefore, the above problems need to be solved.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the defects, the utility model aims to provide a pressure protective sleeve which can realize the protection of the tip and the anti-sliding effect on articles such as a traction bow and an osteotomy template.

The technical scheme is as follows: in order to achieve the above object, the present invention provides a pressurized protective sheath, including: the elastic device comprises a shell, an inner ring and an elastic device; the elastic device is connected between the shell and the inner ring, and the elastic device has a pressurizing effect towards the axis direction on the inner ring. The pressurized protective sleeve of the utility model protects the tip by matching the shell and the inner ring, and the extrusion force of the inner ring to the tip can be increased by adding the elastic device, so that the inner ring is more tightly attached to the tip, thereby having the function of fixing the tip and preventing the protective sleeve from falling off from the tip; when using in traction bow or knee joint replacement operation osteotomy template device, with protective sheath in syringe needle department, one end and traction bow or shin bone template laminating, because the fixed action of inner ring to the syringe needle for the protective sheath has limiting displacement to traction bow or shin bone template, can prevent to slide.

Further, in the pressurized protective sleeve, the housing is a hollow cylinder; the inner ring is a hollow cylinder, is positioned in a space formed by the shell and is coaxially arranged with the shell; the elastic device consists of a group of springs, the springs are evenly distributed in an annular space formed between the shell and the inner ring, and the springs are connected with the shell and the inner ring. The shell in the pressurized protective sleeve of the utility model plays a role in protecting the tip, and the inner ring has an extrusion force towards the axis direction and is used for fixing the tip; the elastic device composed of the spring can further increase the extrusion force of the inner ring to the tip, strengthen the fixing effect and prevent displacement.

Further, in the pressurized protective sheath, the inner ring includes a set of inner ring sections, the inner ring sections form an inner ring, and the inner ring sections are connected to the housing through an elastic device. The inner ring in the pressurized protective sleeve of the utility model consists of a plurality of inner ring subsections, and under the condition that the pressure provided by the spring is not changed, each inner ring subsection can receive larger pressure compared with the whole inner ring, thereby providing larger extrusion force for the protected tip; and the inner ring subsection can be spread to adapt to the tip with larger diameter, thereby enlarging the application range of the pressurized protective sleeve.

Further, in the pressurized protective sleeve, the housing is a hollow cylinder with a closed bottom. One end confined shell can be better play to most advanced guard action in the pressurization formula protective sheath, prevent that there is article to influence the protection to most advanced through open shell.

Furthermore, in the pressurized protective sleeve, a pressurizing mechanism is further arranged at the bottom of the shell, and an arc part is arranged on one surface of the inner ring close to the bottom. The pressurizing mechanism of the pressurizing type protective sleeve can apply pressure to the inner ring close to the bottom to open the inner ring, and the inner ring on one side far away from the pressurizing mechanism is gathered inwards under the action of the spring, so that the extrusion force is increased; the circle of the inner ring close to the bottom is provided with an arc part, so that the pressurizing mechanism and the inner ring have smooth action.

Further, in the pressurized protective sleeve, the pressurizing mechanism includes a button, a button spring, a pressurizing block, and a connecting portion; the pressure boost piece is established in the shell, button spring coupling pressure boost piece and shell, the button is established in the outside of shell, connecting portion connect button and pressure boost piece. When the button spring of the pressurized protective sleeve is in a normal state, the pressurizing block has pressure on the inner ring close to one side of the button, the inner ring at the bottom is expanded, and the inner ring far away from one side of the button is inwardly gathered under the action of the spring, so that the extrusion force is increased; when the button is pulled up, the pressure of the pressurizing block on the inner ring is relieved, and the inner ring is restored to the state of consistent inner diameter.

Further, in the pressurized protective sleeve, the pressurizing mechanism includes a knob, a bolt, a nut, and a pressurizing block; the pressure boost piece is established in the shell, the nut is worn to locate by the bolt, bolted connection knob and pressure boost piece. When the knob of the pressurization type protective sleeve rotates, the bolt is driven to move towards the end part of the protective sleeve or the bottom direction in the nut, and the pressurization block moves along with the bolt. When the knob rotates towards a certain direction, the pressurizing block moves towards the end part, the inner ring at the bottom is spread, and the inner ring at one side far away from the button is gathered inwards under the action of the spring, so that the extrusion force is increased; when the button rotates in the opposite direction, the pressure of the pressurizing block on the inner ring is released, and the inner ring returns to the state of consistent inner diameter.

Further, in the pressurized protective sleeve, irregular particles are arranged on the inner surface of the inner ring. The irregular granule of inner ring internal surface of pressurization formula protective sheath can increase the frictional force between inner ring and the pointed end, further strengthen the effect that protection and antiskid moved.

Further, in the pressurized protective sleeve, an inner diameter of the inner ring at an end close to the inlet and the outlet is larger than an inner diameter of the inner ring at an end far from the inlet and the outlet. Pressurization formula protective sheath set up the inner ring internal diameter into access & exit one end and be greater than bottom one end, the protective sheath of being convenient for embolias most advanced and take off.

Further, in the pressurized type protection sleeve, the inner diameter of the inner ring may be set to various specifications according to the outer diameter of the object to be used. Pressurization formula protective sheath in the internal diameter set up multiple specification, can be used for the other objects of the ke shi needle of different specifications, pilot pin or needs protection, strong adaptability.

Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has: the pressurized protective sleeve of the utility model can be sleeved on the two ends of the kirschner wire used for bone traction, the positioning pin of the osteotomy template used for osteotomy of knee joint and other replacement operations or other points with requirements, and after the pressurized protective sleeve is sleeved on the point, the pressurized protective sleeve plays a role in protecting the point; the pressurizing action of the elastic device on the inner ring in the axial direction enables the inner ring to have continuous extrusion force on the tip end, so that the protective sleeve and the tip end cannot perform axial relative motion, and the traction bow limited by the protective sleeve or the osteotomy template is prevented from slipping; pressurization formula protective sheath structural design ingenious reasonable, strong adaptability, the protective properties is good, the antiskid moves effectually, can improve the security that the bone was pull and was cut the bone operation.

Drawings

FIG. 1 is a schematic view of the pressurized protective sheath according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a cross-sectional view of the pressurized sheath of example 3 taken along the direction B-B, with the spring in an expanded state and the inner ring near the base in an expanded state;

FIG. 5 is a sectional view of the pressurized sheath of example 3 taken along the direction B-B, in which the push button is pulled up;

FIG. 6 is a cross-sectional view of the pressurized protective sheath of example 4 taken along the line B-B, showing an initial state;

FIG. 7 is a cross-sectional view of the pressurized sheath of example 4 taken along the direction B-B, wherein the knob is rotated toward the end to expand the inner ring near the bottom;

in the figure: 1. a housing; 2. an inner ring; 21. an inner ring subsection; 22. an arc portion; 3. an elastic device; 31. a spring; 4. a pressurization mechanism; 41. a button; 42. a button spring; 43. a pressure increasing block; 44. a connecting portion; 45. a knob; 46. a bolt; 47. and a nut.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1

The pressurized protective sleeve as shown in fig. 1-3 comprises a shell 1, an inner ring 2 and an elastic device 3; the elastic device 3 is connected between the shell 1 and the inner ring 2, and the elastic device 3 has a pressurizing effect on the inner ring 2 towards the axial center direction.

As shown in fig. 2, the housing 1 is a hollow cylinder; the inner ring 2 is a hollow cylinder, the inner ring 2 is positioned in a space formed by the shell 1, and the inner ring 2 and the shell 1 are coaxially arranged; the elastic device 3 is composed of a group of springs 31, the springs 31 are evenly distributed in an annular space formed between the outer shell 1 and the inner ring 2, and the springs 31 are connected with the outer shell 1 and the inner ring 2.

Further, the inner ring 2 comprises a set of inner ring sections 21, the inner ring sections 21 forming the inner ring 2, the inner ring sections 21 being connected to the housing 1 by means of the elastic means 3.

During the use, with the pressurization formula protective sheath along the axial cover in tip department, at this moment, shell 1 plays the guard action to the tip, and spring 31 all has the pressurization effect to axle center direction to every inner ring subsection 21, and inner ring subsection 21 extrudees most advanced for protective sheath and most advanced can't carry out axial relative motion, thereby prevent to take place to slide by the spacing traction bow of protective sheath or osteotomy template. When the use is finished, the pressurizing protective sleeve is taken down.

Example 2

And, the housing 1 is a hollow cylinder with a closed bottom.

When the compression type bone cutting template is used, the compression type protective sleeve is axially sleeved at the tip end, at the moment, the shell 1 plays a role in protecting the tip end, the spring 31 has a compression effect on each inner ring subsection 21 in the axis direction, and the inner ring subsections 21 extrude the tip end, so that the protective sleeve and the tip end cannot perform axial relative motion, and the traction bow limited by the protective sleeve or the bone cutting template is prevented from sliding; the closed bottom housing 1 provides better protection of the tip from objects passing through the open housing 1. When the use is finished, the pressurizing protective sleeve is taken down.

Example 3

And, the housing 1 is a hollow cylinder with a closed bottom.

In addition, the bottom of the shell 1 is also provided with a pressurizing mechanism 4, and one surface of the inner ring 2 close to the bottom is provided with an arc part 22.

Wherein, the supercharging mechanism 4 comprises a button 41, a button spring 42, a supercharging block 43 and a connecting part 44; the pressurizing block 43 is arranged in the shell 1, the button spring 42 is connected with the pressurizing block 43 and the shell 1, the button 41 is arranged outside the shell 1, and the connecting part 44 is connected with the button 41 and the pressurizing block 43.

As shown in fig. 5-6, when the button spring 42 is in a normal state, the pressurizing block 43 exerts pressure on the inner ring 2 on the side close to the button 41, the inner ring 2 on the bottom is expanded, and the inner ring segment 21 on the side far from the button is inwardly gathered under the action of the spring 31; when the pressure-increasing type protective sleeve is used, the button 41 is pulled up, the pressure-increasing block 43 releases the pressure on the inner ring 2, the inner ring 2 restores to the state of the same inner diameter, the pressure-increasing type protective sleeve is axially sleeved at the tip, the shell 1 plays a role in protecting the tip, the spring 31 has a pressure-increasing effect on each inner ring subsection 21 in the axis direction, the tip is extruded by each inner ring subsection 21, after the position is adjusted, the button 41 is released, and the button spring 42 restores to the normal state; at the moment, the pressure increasing block 43 recovers the pressure on the inner ring 2 under the action of the button spring 42, the inner ring subsection 21 on the side far away from the button 41 is gathered inwards under the action of the spring 31, and the extrusion force of the inner ring 2 on the tip is increased, so that the protective sleeve and the tip cannot perform axial relative motion, and the traction bow limited by the protective sleeve or the osteotomy template is prevented from sliding; the closed-bottom shell 1 can provide better protection for the tip, and articles are prevented from influencing the tip through the open-type shell 1; the arc part 22 is arranged on one circle of the inner ring 2 close to the bottom, so that the pressurizing mechanism 4 and the inner ring 2 can act smoothly. When the use is finished, the button 41 is pulled up, the pressurizing block 43 releases the pressure on the inner ring 2, the inner ring 2 is restored to the state of consistent inner diameter, and the pressurizing protective sleeve is taken down.

Example 4

And, the housing 1 is a hollow cylinder with a closed bottom.

Wherein, the pressurizing mechanism 4 comprises a knob 45, a bolt 46, a nut 47 and a pressurizing block 43; the pressurizing block 43 is arranged in the shell 1, the bolt 46 penetrates through the nut 47, and the bolt 46 is connected with the knob 45 and the pressurizing block 43.

Further, irregular particles are arranged on the inner surface of the inner ring 2.

The inner diameter of the inner ring 2 at the end close to the inlet and outlet is larger than that at the end far away from the inlet and outlet.

As shown in fig. 6-7, when in use, the pressurized protective sleeve is axially sleeved at the tip, and the inner diameter of the end of the inner ring 2 close to the inlet and the outlet is larger than that of the end far away from the inlet and the outlet, so that the tip can be allowed to smoothly penetrate into the protective sleeve; at this time, the case 1 protects the tip, the spring 31 pressurizes each inner ring segment 21 in the axial direction, and the inner ring segments 21 press the tip; after the position is adjusted, the knob 45 is rotated to drive the bolt 46 to move towards the end part of the protective sleeve in the nut 47, the pressurizing block 43 moves towards the end part of the protective sleeve along with the bolt, and the inner ring 2 at the bottom is expanded; under the action of the spring 31, the inner ring 2 at one side far away from the knob 45 is gathered inwards, so that the extrusion force is increased, the protective sleeve and the tip end cannot move axially relative to each other, and the traction bow limited by the protective sleeve or the osteotomy template is prevented from sliding; the closed-bottom shell 1 can provide better protection for the tip, and articles are prevented from influencing the tip through the open-type shell 1; irregular particles on the inner surface of the inner ring 2 can increase the friction force between the inner ring 2 and the tip, and further enhance the anti-slip effect. When the use is finished, the knob 45 is rotated to drive the pressurizing block 43 to move towards the bottom of the shell 1, the pressurizing block 43 releases the pressure on the inner ring 2, the inner ring 2 returns to the initial state, and the pressurizing protective sleeve is taken down.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. A pressurization formula protective sheath which characterized in that: comprises a shell (1), an inner ring (2) and an elastic device (3); the elastic device (3) is connected between the shell (1) and the inner ring (2), and the elastic device (3) has a pressurizing effect on the inner ring (2) towards the axis direction.

2. A pressurized protective sheath according to claim 1, wherein: the shell (1) is a hollow cylinder; the inner ring (2) is a hollow cylinder, the inner ring (2) is positioned in a space formed by the shell (1), and the inner ring (2) and the shell (1) are coaxially arranged; the elastic device (3) is composed of a group of springs (31), the springs (31) are evenly distributed in an annular space formed between the shell (1) and the inner ring (2), and the springs (31) are connected with the shell (1) and the inner ring (2).

3. A pressurized protective sheath according to claim 1, wherein: the inner ring (2) comprises a group of inner ring sections (21), the inner ring sections (21) form the inner ring (2), and the inner ring sections (21) are connected with the shell (1) through elastic devices (3).

4. A pressurized protective sheath according to claim 1, wherein: the shell (1) is a hollow cylinder with a closed bottom.

5. A pressurized protective sheath according to claim 4, wherein: the bottom of shell (1) still is equipped with booster mechanism (4), the one side that inner ring (2) are close to the bottom is equipped with arc portion (22).

6. A pressurized protective sheath according to claim 5, wherein: the supercharging mechanism (4) comprises a button (41), a button spring (42), a supercharging block (43) and a connecting part (44); the pressurizing block (43) is arranged in the shell (1), the button spring (42) is connected with the pressurizing block (43) and the shell (1), the button (41) is arranged outside the shell (1), and the connecting part (44) is connected with the button (41) and the pressurizing block (43).

7. A pressurized protective sheath according to claim 5, wherein: the supercharging mechanism (4) comprises a knob (45), a bolt (46), a nut (47) and a supercharging block (43); the pressurizing block (43) is arranged in the shell (1), the bolt (46) penetrates through the nut (47), and the bolt (46) is connected with the knob (45) and the pressurizing block (43).

8. A pressurized protective sheath according to any one of claims 1-7, wherein: the inner diameter of one end, close to the inlet and the outlet, of the inner ring (2) is larger than that of one end, far away from the inlet and the outlet.