CN210810905U - A bone joint piece and concatenation formula snake bone for concatenation formula snake bone - Google Patents

Abstract

The application discloses a bone joint piece and concatenation formula snake bone for concatenation formula snake bone. The condyle block for the spliced snake bone comprises a body and two first limiting bulges arranged on the body; the two first limiting bulges extend forwards along the thickness direction of the body, and are symmetrical relative to the center of the body; the body is also provided with two first connecting holes and two second connecting holes which penetrate through the body along the thickness direction of the body; the two first connecting holes are symmetrical relative to the center of the body and are adjacent to or penetrate through the two first limiting bulges; the two second connecting holes are symmetrical relative to the center of the body, and the planes of the axes of the two second connecting holes are perpendicular to the plane of the axes of the two first connecting holes.

Description

A bone joint piece and concatenation formula snake bone for concatenation formula snake bone

Technical Field

The application relates to the field of medical and industrial supplies, in particular to a bone joint block for a splicing snake bone and the splicing snake bone.

Background

The snake bone is a part capable of realizing bending, and has wide application in the field of medical and industrial products. For example, a snake bone may be applied to an endoscope, and the snake bone can control the steering of a lens at the front end of the endoscope through its own bending, so that medical staff can clearly observe a lesion in the respiratory tract or the digestive tract of a patient. In the prior art, the snake bone is generally composed of a plurality of bone segments hinged to each other.

SUMMERY OF THE UTILITY MODEL

One of the embodiments of the application provides a bone joint block for a spliced snake bone, which comprises a body and two first limiting bulges arranged on the body; the two first limiting bulges extend forwards along the thickness direction of the body, and are symmetrical relative to the center of the body; the body is also provided with two first connecting holes and two second connecting holes which penetrate through the body along the thickness direction of the body; the two first connecting holes are symmetrical relative to the center of the body and are adjacent to or penetrate through the two first limiting bulges; the two second connecting holes are symmetrical relative to the center of the body, and the planes of the axes of the two second connecting holes are perpendicular to the plane of the axes of the two first connecting holes.

In some embodiments, the condyle block further comprises two second limiting protrusions extending backward along the thickness direction of the body, the two second limiting protrusions are symmetrical with respect to the center of the body, and the two first connection holes are adjacent to or penetrate through the two second limiting protrusions.

In some embodiments, the first stop lug comprises a first flat surface on a side thereof, and the second stop lug comprises a second flat surface on a side thereof; the first plane is parallel to the second plane; the two first planes of the two first limiting bulges are arranged oppositely, and the two second planes of the two second limiting bulges are arranged oppositely.

In some embodiments, the body is provided with a central hole penetrating through the body in a thickness direction, and the two first connection holes and the two second connection holes are arranged at the periphery of the central hole.

In some embodiments, the body includes a sidewall surrounding the central aperture and a boss located within the central aperture and connected to an inner surface of the sidewall, the first retention projection is disposed on the sidewall, and the second retention projection is disposed on the boss.

In some embodiments, the condyle block further comprises two third limiting protrusions extending backwards along the thickness direction of the body, the two third limiting protrusions are symmetrical with respect to the center of the body, and the two second connecting holes are adjacent to or penetrate through the two third limiting protrusions.

In some embodiments, the first stop lug comprises a first flat surface on a side thereof, and the third stop lug comprises a third flat surface on a side thereof; the first plane is perpendicular to the third plane; the two first planes of the two first limiting bulges are arranged oppositely, and the two third planes of the two third limiting bulges are arranged oppositely.

In some embodiments, the front ends of the two first limiting protrusions are arc-shaped.

In some embodiments, the body is cylindrical in shape.

Another embodiment of the present application provides a split-joint snake bone, which comprises the bone segment block according to any one of the above technical solutions.

In some embodiments, the spliced snake bone comprises a plurality of bone segments according to any one of the above technical solutions, and four traction ropes; each traction rope sequentially penetrates through the first connecting holes or the second connecting holes of the plurality of bone joint blocks so as to splice the plurality of bone joint blocks into a snake bone; under the action of the traction rope, the front end of the first limiting bulge of each bone segment block abuts against the adjacent bone segment block in front to form a rotating fulcrum.

In some embodiments, the thickness of the body of at least two of the bony segment pieces is different.

In some embodiments, the first stop bumps of at least two of the condylar segments differ in height.

Drawings

The present application will be further explained by way of exemplary embodiments, which will be described in detail by way of the accompanying drawings. These embodiments are not intended to be limiting, and in these embodiments like numerals are used to indicate like structures, wherein:

FIG. 1 is a side perspective view of a bony segment for a split-joint snake bone according to some embodiments of the present application;

FIG. 2 is a schematic side perspective view of a bony segment for a split-joint snake bone according to other embodiments of the present application;

FIG. 3 is a bottom perspective view of a bony segment for a split-joint snake bone according to some embodiments of the present application;

FIG. 4 is a schematic top perspective view of a bony segment for a split-joint snake bone according to some embodiments of the present application;

FIG. 5 is a bottom plan view of a bony segment for a spliced snake bone according to some embodiments of the present application;

FIG. 6 is a schematic side perspective view of a bony segment for a split-joint snake bone according to still other embodiments of the present application;

FIG. 7 is a bottom plan view of a bony segment for a split-joint snake bone according to still other embodiments of the present application;

FIG. 8 is a perspective view of a spliced snake bone according to some embodiments of the present application.

100 is the bone joint piece, and 1000 is concatenation formula snake bone, and 1 is the body, and 2 are first spacing archs, and 3 are first connecting hole, and 4 are the second connecting hole, and 5 are the spacing arch of second, and 6 are the spacing arch of third, and 11 are the centre bore, and 12 are the boss, and 13 are the lateral wall, and 21 are first plane, and 51 is the second plane.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

On the contrary, this application is intended to cover any alternatives, modifications, equivalents, and alternatives that may be included within the spirit and scope of the application as defined by the appended claims. Furthermore, in the following detailed description of the present application, certain specific details are set forth in order to provide a better understanding of the present application. It will be apparent to one skilled in the art that the present application may be practiced without these specific details.

Fig. 1 is a schematic side perspective view of a segment for a split-fitting snake bone according to some embodiments of the present application, fig. 2 is a schematic side perspective view of a segment for a split-fitting snake bone according to some other embodiments of the present application, fig. 3 is a schematic bottom perspective view of a segment for a split-fitting snake bone according to some embodiments of the present application, fig. 4 is a schematic top perspective view of a segment for a split-fitting snake bone according to some embodiments of the present application, and fig. 5 is a schematic bottom plan view of a segment for a split-fitting snake bone according to some embodiments of the present application. The bone segments according to embodiments of the present application will be described in detail below with reference to fig. 1-5. It should be noted that the following examples are only for explaining the present application and do not constitute a limitation to the present application.

In an embodiment of the present application, as shown in fig. 1, the bone segment 100 for the split-joint snake bone 1000 may include a body 1 and two first limit protrusions 2 provided on the body 1. The two first limiting bulges 2 extend forwards along the thickness direction of the body 1, and the two first limiting bulges 2 are symmetrical relative to the center of the body 1. By central symmetry with respect to the body is understood central symmetry with respect to the central axis of the body 1. Still be equipped with two first connecting hole 3 and two second connecting hole 4 that run through body 1 along the thickness direction of body 1 on the body 1. Two first connecting holes 3 are symmetrical relative to the center of body 1, are adjacent to or run through two first spacing archs 2, and two second connecting holes 4 are symmetrical relative to the center of body 1, and the plane that the axis of two second connecting holes 4 is located is perpendicular with the plane that the axis of two first connecting holes 3 is located. It should be noted that, the first connection hole 3 is adjacent to the first limiting protrusion 2, which means that at least a part of the hole wall of the first connection hole 3 is located on the first limiting protrusion 2; and the first connection hole 3 penetrating through the first restriction protrusion 2 can be understood as the first connection hole 3 being completely disposed in the first restriction protrusion 2. The first coupling hole 3 shown in fig. 1 is in a state of being disposed in close proximity to the first restriction protrusion 2. When a plurality of bone segments 100 are spliced together, for two adjacent bone segments 100, the front end of the first limiting protrusion 2 of the posterior bone segment 100 can abut against the body 1 of the anterior bone segment 100 to form a rotation fulcrum, so that the two adjacent bone segments 100 can rotate relatively around the rotation fulcrum. Two first connection holes 3 and two second connection holes 4 may be used to splice a plurality of bone segments 100 through a pull string. Two first connecting holes 3 can guarantee that the relative adjacent condyle piece 100 in the place ahead of first spacing arch 2 is difficult for the discovery to rock or misplace, and if the pull passes the haulage rope of second connecting hole 4, then can be so that condyle piece 100 rotates round the rotation fulcrum.

As shown in fig. 2 to 5, the condyle block 100 further includes two second limiting protrusions 5, the two second limiting protrusions 5 extend backward along the thickness direction of the body 1, the two second limiting protrusions 5 are symmetrical with respect to the center of the body 1, and the two first connection holes 3 are adjacent to or penetrate through the two second limiting protrusions 5. It is noted that in the present application, a forward extension is understood to extend in one of the thickness directions, and a rearward extension is understood to extend in the other of the thickness directions. When a plurality of bone segments 100 are spliced together, for two adjacent bone segments 100, the side part of the first limiting protrusion 2 of the posterior bone segment 100 can abut against the side part of the second limiting protrusion 5 of the anterior bone segment 100 to limit the relative rotation direction of the two bone segments 100. Meanwhile, the rear end of the second limit protrusion 5 of the anterior condyle 100 also can abut against the body 1 of the posterior condyle. In some alternative embodiments, the rear ends of the two second limiting protrusions 5 are arc-shaped, so that when the rear ends of the second limiting protrusions 5 abut against the body 1 of the posterior condyle block 100, a rotation fulcrum can be formed, and under the cooperation effect of the first limiting protrusions 2, the two adjacent condyle blocks 100 can smoothly rotate relatively. In some alternative embodiments, the first coupling hole 3 may penetrate the first and second stopper protrusions 2 and 5. At this time, the front end of the first limiting protrusion 2 abuts against the rear end of the second limiting protrusion 5, so that a rotation fulcrum is formed between the first limiting protrusion 2 and the second limiting protrusion 5. In some alternative embodiments, the first coupling hole 3 may be immediately adjacent to the first and second stopper projections 2 and 5.

In some embodiments, the first stopper protrusion 2 includes a first flat surface 21 at a side thereof, and the second stopper protrusion 5 includes a second flat surface 51 at a side thereof. The first plane 21 is parallel to the second plane 51, the two first planes 21 of the two first limiting protrusions 2 are arranged oppositely, and the two second planes 51 of the two second limiting protrusions 5 are arranged oppositely. It should be noted that, the two first planes 21 of the two first limiting protrusions 2 are oppositely disposed, which means that the two first planes 21 are respectively disposed on two opposite side surfaces of the two first limiting protrusions 2, and the two second planes 51 of the two second limiting protrusions 5 are oppositely disposed, which means that the two second planes 51 are respectively disposed on two opposite side surfaces of the two second limiting protrusions 5. When a plurality of bone segments 100 are spliced together, for two adjacent bone segments 100, the first plane 21 of the first limiting protrusion 2 of the posterior bone segment 100 can be jointed with the second plane 51 of the second limiting protrusion 5 of the anterior bone segment 100, so that the two bone segments 100 can only rotate relatively in a plane parallel to the second plane 51. When the two condylar masses 100 are spliced together, the two second stop projections 5 of the anteriorly located condylar mass 100 are located between the two first stop projections 2 of the posteriorly located condylar mass 100. Through such setting, first spacing arch 2 can play the effect of centre gripping second spacing arch 5 to a certain extent. In this embodiment, first connecting hole 3 is not only adjacent to first spacing arch 2, but also adjacent to second spacing arch 5, and first connecting hole 3 is by preceding first section, the second section that forms on body 1 and the third section that forms on second plane 51 that includes formation on first plane 21 in proper order after to, and first section and third section are sunken semicylindrical hole. On two adjacent condyle blocks 100, the first section of the first connection hole 3 of the posterior condyle block 100 can be combined with the third section of the first connection hole 3 of the anterior condyle block 100 to form a complete hole.

In some embodiments, the body 1 is provided with a center hole 11 penetrating the body 1 in a thickness direction, and the two first connection holes 3 and the two second connection holes 4 are provided at a periphery of the center hole 11. In some embodiments, when the split-type snake bone composed of the bone segments 100 is applied to an endoscope, signal lines, power lines, etc. on the endoscope can pass through the central hole 11, and the body 1 can protect the signal lines and the power lines. In some alternative embodiments, the central hole 11 may be provided in plurality, so that different kinds of wires such as signal wires and power wires on the endoscope may pass through different central holes 11, respectively.

In some embodiments, the body 1 includes a sidewall 13 surrounding the central hole 11 and a boss 12 located within the central hole 11 and connected to an inner surface of the sidewall 13, the first stopper protrusion 2 is disposed on the sidewall 13, and the second stopper protrusion 5 is disposed on the boss 12. By virtue of the design of the boss 12, the side wall 13 can be relatively thin, which is advantageous for reducing the weight of the bone fragment 100. In order to provide a sufficient space for the second stopper protrusion 5, a boss 12 is additionally provided in the center hole 11. Through such design, can reduce the cross sectional area of body 1 outer wall as far as possible, guarantee body 1 simultaneously again to have sufficient intensity and installation space.

Fig. 6 is a side perspective view of a bone segment for a spliced snake bone according to still further embodiments of the present application, and fig. 7 is a bottom plan view of a bone segment for a spliced snake bone according to still further embodiments of the present application. As shown in fig. 6 and 7, the condyle block 100 further includes two third limiting protrusions 6, the two third limiting protrusions 6 extend backward along the thickness direction of the body 1, the two third limiting protrusions 6 are symmetrical with respect to the center of the body 1, and the two second connecting holes 4 are adjacent to or penetrate through the two third limiting protrusions 6. Through the arrangement of the third limiting bulge 6, when the plurality of bone segment blocks 100 are spliced together, as the first connecting holes 3 are closely adjacent to or penetrate through the first limiting bulge 2, the second connecting holes 4 are closely adjacent to or penetrate through the third limiting bulge 6, and the planes of the axes of the two second connecting holes 4 are vertical to the planes of the axes of the two first connecting holes 3; therefore, two adjacent bone segments 100 are staggered by 90 degrees, i.e. the first connection hole 3 of the anterior bone segment 100 is opposite to the second connection hole 4 of the posterior bone segment 100. With this arrangement, the split-joint snake bone using the condyle block 100 can be bent in four directions. In some embodiments, for two adjacent bone segments 100, the side of the first stop protrusion 2 of the posterior bone segment 100 may abut against the side of the third stop protrusion 6 of the anterior bone segment 100 to define the direction of relative rotation of the two bone segments 100. At the same time, the rear end of the third limit projection 6 of the anterior condyle 100 may also abut against the body 1 of the posterior condyle. In some alternative embodiments, the rear ends of the two third limiting protrusions 6 are arc-shaped, and when the rear ends of the third limiting protrusions 6 abut against the body of the posterior condyle, a rotation fulcrum can be formed, so that the two adjacent condyle blocks 100 can smoothly rotate relative to each other under the cooperation of the first limiting protrusions 2.

In some embodiments, the first stopper protrusion 2 includes a first flat surface 21 at a side thereof, and the third stopper protrusion 6 includes a third flat surface at a side thereof; the first plane 21 is perpendicular to the third plane; two first planes 21 of two first limiting bulges 2 are arranged oppositely, and two third planes of two third limiting bulges 6 are arranged oppositely. When a plurality of bone segments 100 are spliced together, for two adjacent bone segments 100, the first plane 21 of the first limiting bulge 2 of the posterior bone segment 100 can be jointed with the third plane of the third limiting bulge 6 of the anterior bone segment 100, so that the two bone segments 100 can rotate relatively in a plane parallel to the first plane 21 (or the third plane).

In some embodiments, the front ends of the two first stopper projections 2 are arc-shaped. When two adjacent bone segment blocks 100 that splice together take place relative rotation, the relative body 1 that leans on rather than taking place to rotate of the curved front end of first spacing arch 2, when making two adjacent bone segment blocks 100 can smoothly take place relative rotation, make the first spacing arch 2 of bone segment block 100 again can all the time lean on with the body 1 counterbalance of the bone segment block 100 in the place ahead.

In some embodiments, the body 1 presents a cylindrical shape. When the spliced snake bone made of the bone segment block 100 is applied to a medical endoscope, the snake bone needs to stretch into a human body pore canal (a digestive tract or a respiratory tract and the like), the body 1 is set to be cylindrical, and the bone segment block 100 can be effectively prevented from damaging the human body pore canal. The projection of the body 1 in the thickness direction in the present embodiment is circular, but in some alternative embodiments, the body 1 may also be elliptical cylinder, quadrangular prism, hexagonal prism, irregular shape, etc., and when the body 1 is prism, the edges may be chamfered to make smooth transition between the sides for protecting the patient using the endoscope.

The beneficial effects that the bone segment 100 for the split-joint snake bone 1000 disclosed in the present application may bring include but are not limited to: (1) the structure is simple, the manufacture is convenient, and the cost is lower; (2) the bone segment blocks 100 are used for assembling the spliced snake bone 1000, riveting is not needed among the bone segment blocks 100, and the assembling process is simple and rapid. It is to be noted that different embodiments may produce different advantages, and in different embodiments, any one or combination of the above advantages may be produced, or any other advantages may be obtained.

Some embodiments of the present application provide a split snake bone 1000 comprising a condyle block 100 according to any of the above-described embodiments. By using the bone segment block 100 in any of the above technical schemes, the splicing process of the splicing snake bone 1000 is simple and quick, and the production and manufacturing cost of the splicing snake bone 1000 can be reduced, so that the cost of the endoscope is reduced, and the development and popularization of visual medical treatment are facilitated.

Fig. 8 is a perspective view of a split snake according to some embodiments of the present application, and as shown in fig. 8, the split snake 1000 comprises a plurality of bone segments 100 as described in any of the above embodiments, and four pulling ropes (not shown). Each traction rope sequentially passes through the first connecting hole 3 or the second connecting hole 4 of the plurality of bone segments 100 to splice the plurality of bone segments 100 into a snake bone. Under the effect of haulage rope (can be the effect of a single haulage rope, also can be the effect of many haulage ropes), the front end of the first spacing arch 2 of condyle piece 100 supports and leans on the adjacent condyle piece 100's in the place ahead body 1 to form the fulcrum of rotating. Specifically, when only the condyle block 100 having the first limiting protrusion 2 is adopted, or the condyle block 100 having the first limiting protrusion 2 and the second limiting protrusion 5 is adopted, the spliced type snake bone 1000 can be bent under the action of one or two traction ropes passing through the second connecting hole 4, and the traction rope passing through the first connecting hole 3 can prevent the first limiting protrusion 2 of the condyle block 100 from being separated from the body 1 when the spliced type snake bone 1000 is bent. When the condyle block 100 having the first and third limiting protrusions 2 and 6 is used, the split type snake bone 1000 can be bent by the combined action of the four traction ropes. In some alternative embodiments, the pulling rope may be selected from steel wire, nano-wire, glass rope, etc., and the application is not limited thereto. In addition, the number of the bone segments 100 can be specifically selected by the skilled person according to the length of the spliced snake bone 1000, which is not limited in the present application. In some alternative embodiments, when the second limiting protrusion 5 is provided on the condyle block 100 of the split-joint snake bone 1000, the rear end of the second limiting protrusion 5 may also be arranged to abut against the body 1 of the condyle block 100 adjacent to the rear; at the same time, the first plane 21 of the first stop protrusion 2 of a condyle 100 can be engaged with the second plane of the second stop protrusion 5 of a preceding adjacent condyle 100, so that the two condyle 100 can only relatively rotate in a plane parallel to the second plane. In some alternative embodiments, when the third limiting protrusion 6 is provided on the condyle block 100 of the split-joint type snake bone 1000, the rear end of the third limiting protrusion 6 may also be set to abut against the body 1 of the condyle block 100 adjacent to the rear; at the same time, the first plane 21 of the first stop protrusion 2 of a condyle 100 can be engaged with the second plane of the third stop protrusion 6 of a preceding adjacent condyle 100, so that two condyle 100 can only relatively rotate in a plane parallel to the third plane.

In some alternative embodiments, in a split-type snake bone 1000, it is possible to include both the condyle blocks 100 having the second stopper protrusion 5 and the condyle blocks 100 having the third stopper protrusion 6. For example, the condyle blocks 100 having the second retaining protrusion 5 and the condyle blocks 100 having the third retaining protrusion 6 may be staggered. For another example, for three of the bone segments 100 in the split-type snake bone 1000, there may be one bone segment 100 having the third limit projection 6 and two bone segments 100 having the second limit projection 5 among the three bone segments 100. Specifically, the condyle block 100 having the third limiting protrusion 6 may be disposed at the forefront, the first limiting protrusion 2 of the rearmost condyle block 100 abuts against the second limiting protrusion 5 of the middle condyle block 100, and the first limiting protrusion 2 of the middle condyle block 100 abuts against the third limiting protrusion 6 of the foremost condyle block 100. With this arrangement, the direction in which the rearmost condyle 100 rotates relative to the middle condyle 100 is different from the direction in which the forwardmost condyle 100 rotates relative to the middle condyle 100, so that the entire split-type snake 1000 can rotate in four directions (when the third plane is perpendicular to the first plane 21, the four directions of rotation of the split-type snake 1000 are in two orthogonal planes). In some alternative embodiments, in one split-joint snake bone 1000, the bone segment 100 having only the first limiting protrusion 2 may be combined with the other two bone segments (the bone segment 100 having the second limiting protrusion 5 and the bone segment 100 having the third limiting protrusion 6), and those skilled in the art may specifically set the split-joint snake bone 1000 according to the actual use requirement.

In some embodiments, the thickness of the body 1 of each condyle 100 is the same. In some alternative embodiments, the thickness of the body 1 of at least two of the condylar masses 100 is different. During the bending process of the split-joint snake bone 1000, the bone segments 100 with different body 1 thicknesses will have different bending radians. Therefore, by setting the body 1 of different bone segments 100 to have different thicknesses, the split-joint snake bone 1000 can have different radii of curvature after bending. The thickness of the body 1 of each bone segment 100 can be set by those skilled in the art according to the actual use requirement (or, bone segments 100 with different body thicknesses can be selected for splicing), so that the spliced snake bone 1000 of the present application can be bent into various shapes.

In some embodiments, the height of the first stop protrusion 2 of each condyle 100 is the same. In some alternative embodiments, the first stop projections 2 of at least two of the condylar masses 100 differ in height. Since the height of the first stopper protrusion 2 can define the distance between two adjacent bone segments 100, the split-joint snake bone 1000 can have different radii of curvature after bending by setting the first stopper protrusions 2 of different bone segments 100 to different heights. The height of the first stopper protrusion 2 is a distance between the foremost end of the first stopper protrusion 2 and the body 1 in the thickness direction. The specific height of the first limiting protrusion 2 of each bone segment 100 can be set by those skilled in the art according to actual use requirements (or the bone segments 100 with different heights of the first limiting protrusion 2 are selected for splicing), so that the spliced snake bone 1000 of the present application can be bent into various shapes.

The spliced snake bone 1000 disclosed in the present application may bring beneficial effects including but not limited to: (1) the splicing process is simple and quick, and the production and manufacturing cost of the spliced snake bone 1000 can be reduced; (2) the structure is stable and reliable, the bending is smooth, and the endoscope can work efficiently and stably; (3) the curvature radius of the bending of the split-joint snake bone 1000 can be changed by changing the number of the bone segments 100 or assembling different bone segments 100 (such as different thicknesses of the body 1 or different heights of the first limiting bulges 2), so that the split-joint snake bone 1000 can be bent into different shapes; (4) the split-joint snake bone 1000 can be bent towards four directions by the cooperation of different types of bone segments 100 (such as the bone segment 100 with the second limit projection 5 and the bone segment 100 with the third limit projection 6). It is to be noted that different embodiments may produce different advantages, and in different embodiments, any one or combination of the above advantages may be produced, or any other advantages may be obtained.

It is particularly emphasized that the terms "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, are used merely to facilitate description of the present application and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting of the present application.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims (13)

1. A bone joint block for a spliced snake bone is characterized by comprising a body and two first limiting bulges arranged on the body;

the two first limiting bulges extend forwards along the thickness direction of the body, and are symmetrical relative to the center of the body;

the body is also provided with two first connecting holes and two second connecting holes which penetrate through the body along the thickness direction of the body; the two first connecting holes are symmetrical relative to the center of the body and are adjacent to or penetrate through the two first limiting bulges; the two second connecting holes are symmetrical relative to the center of the body, and the planes of the axes of the two second connecting holes are perpendicular to the plane of the axes of the two first connecting holes.

2. The condyle block according to claim 1, further comprising two second limiting protrusions extending rearward in the thickness direction of the body, the two second limiting protrusions being symmetrical with respect to the center of the body, the two first connection holes being adjacent to or penetrating the two second limiting protrusions.

3. The condyle of claim 2, wherein said first stop protrusion comprises a first flat surface on a side thereof, and said second stop protrusion comprises a second flat surface on a side thereof;

the first plane is parallel to the second plane;

the two first planes of the two first limiting bulges are arranged oppositely, and the two second planes of the two second limiting bulges are arranged oppositely.

4. The bone segment of claim 3 wherein the body defines a central bore extending through the body in a thickness direction, the two first attachment holes and the two second attachment holes being disposed about a periphery of the central bore.

5. The bone segment of claim 4 wherein the body includes a sidewall surrounding the central bore and a boss within the central bore and attached to an inner surface of the sidewall, the first stop projection being disposed on the sidewall and the second stop projection being disposed on the boss.

6. The condyle block according to claim 1, wherein the condyle block further comprises two third limiting protrusions extending backward in the thickness direction of the body, the two third limiting protrusions are symmetrical with respect to the center of the body, and the two second connecting holes are adjacent to or penetrate through the two third limiting protrusions.

7. The condyle of claim 6, wherein said first stop protrusion comprises a first flat surface on a side thereof, and said third stop protrusion comprises a third flat surface on a side thereof;

the first plane is perpendicular to the third plane;

the two first planes of the two first limiting bulges are arranged oppositely, and the two third planes of the two third limiting bulges are arranged oppositely.

8. The condyle block of claim 1, wherein the front ends of the two first limiting protrusions are arc-shaped.

9. The condyle block of claim 1, wherein the body exhibits a cylindrical shape.

10. A spliced snake bone comprising a condyle mass according to any one of claims 1 to 9.

11. A spliced snake bone comprising a plurality of condyle blocks according to any of claims 1-9, and four lead wires;

each traction rope sequentially penetrates through the first connecting holes or the second connecting holes of the plurality of bone joint blocks so as to splice the plurality of bone joint blocks into a snake bone;

under the action of the traction rope, the front end of the first limiting bulge of each bone segment block abuts against the adjacent bone segment block in front to form a rotating fulcrum.

12. A spliced snake bone as claimed in claim 11 wherein the body of at least two of said bony segment pieces differ in thickness.

13. A spliced snake bone as claimed in claim 11 wherein the first stop projections of at least two of said bony segment pieces are of different heights.

Images