CN117420012A - Nerve sleeve tensile test tool and nerve sleeve tensile test method - Google Patents
Nerve sleeve tensile test tool and nerve sleeve tensile test method Download PDFInfo
- Publication number
- CN117420012A CN117420012A CN202311744489.9A CN202311744489A CN117420012A CN 117420012 A CN117420012 A CN 117420012A CN 202311744489 A CN202311744489 A CN 202311744489A CN 117420012 A CN117420012 A CN 117420012A
- Authority
- CN
- China
- Prior art keywords
- nerve sleeve
- nerve
- sleeve
- tensile test
- locking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 210000005036 nerve Anatomy 0.000 title claims abstract description 199
- 238000009864 tensile test Methods 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000007689 inspection Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 210000000578 peripheral nerve Anatomy 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 208000010886 Peripheral nerve injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000001953 sensory effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000028389 Nerve injury Diseases 0.000 description 1
- 208000005890 Neuroma Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003872 anastomosis Effects 0.000 description 1
- 210000000467 autonomic pathway Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 210000002808 connective tissue Anatomy 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000030214 innervation Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008764 nerve damage Effects 0.000 description 1
- 210000004126 nerve fiber Anatomy 0.000 description 1
- 210000002569 neuron Anatomy 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0274—Tubular or ring-shaped specimens
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to the technical field of medical instrument inspection, and discloses a nerve sleeve tensile test tool and a nerve sleeve tensile test method. The two ends of the nerve sleeve are respectively plugged into the inner plug parts to provide support for the clamping part, so that the nerve sleeve is prevented from being clamped and damaged or deformed; and the outer pipe fittings are sleeved at the two ends of the nerve sleeve respectively, so that the nerve sleeve is prevented from being directly clamped, the contact area between the inside and the outside of the nerve sleeve and the nerve sleeve tensile test tool is increased, the stability of the nerve sleeve is protected, the slipping or the breakage is prevented, and the strength of the nerve sleeve is protected. The clamping piece clamps the outer pipe fitting and locks the outer pipe fitting to fix the nerve sleeve, so that the outer pipe fitting and the nerve sleeve are prevented from slipping, the nerve sleeve is protected from being additionally damaged by jacking, and the aim of fastening the nerve sleeve is achieved. The success rate of the nerve sleeve tensile test and the accuracy of data are improved, and the cost of the nerve sleeve tensile test is saved.
Description
Technical Field
The invention relates to the technical field of medical instrument inspection, in particular to a nerve sleeve tensile test tool and a nerve sleeve tensile test method.
Background
Peripheral nerve injury is the loss of peripheral nerve structure or function due to tumors, trauma, and other causes, which in turn cause a partial or complete loss of sensory, motor, and autonomic nerve function. At present, autologous nerve grafting is a main means for treating large-section peripheral nerve injury. However, the adventitia suture and the nerve bundle membrane suture are difficult to ensure accurate butt joint of sensory and motor nerve fibers at the anastomotic site, so that the effect of repairing nerve injury by operation is affected, and the defects of functional deficiency of the innervation area of neurons in the donor area, limited selection sources of the nerves in the donor area, mismatching of the sizes and tissue structures of the nerves to be repaired of the nerves and the defect in the donor area and the like exist.
In recent years, a method for constructing an artificial nerve sleeve by using a tissue engineering method to bridge and repair damaged peripheral nerves is adopted, the peripheral nerve regeneration can be obviously promoted by sleeving and repairing the damaged peripheral nerves by using the nerve sleeve, the functions of a remote target organ can be quickly recovered, and the formation of neuroma can be reduced. Aiming at clinical application demands, an absorbable nerve sleeve is developed, is made of degradable materials and is formed by a spinning and braiding process, and the inside and the outside of the nerve sleeve are provided with a good three-dimensional environment for nerve growth by a thread forming process. In order to ensure that the nerve graft can be applied to nerve graft repair with the diameter not more than 30 mm, the nerve graft has strict control requirements on the inner diameter, the size and the wall thickness of the nerve sleeve, and ensures excellent initial mechanical effect.
The tensile test of the nerve sleeve mainly judges whether the nerve sleeve is qualified or not according to tensile strength, but the clamping position is frequently pulled off in the tensile test process, and the nerve sleeve is broken at the clamping position due to the action of external shearing force generated by clamping, so that test data are inaccurate, and the test effect is seriously influenced. And the price of the degradable material is high, once the pulling force slips or pinches off, the nerve sleeve is scrapped and can not be reused, and the cost is indirectly increased.
Disclosure of Invention
The invention aims to provide a nerve sleeve tensile test tool and a nerve sleeve tensile test method, which avoid the problems of slipping and breakage of a nerve sleeve in the tensile test process, provide support for the clamping position of the nerve sleeve and protect the strength of the nerve sleeve; each tensile test can be normally performed, so that the success rate of the tensile test and the accuracy of data are improved, and the cost of the tensile test is saved.
To achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a nerve sleeve tensile test fixture, comprising:
the two inner plugs are arranged and can be respectively plugged into the interiors of the two ends of the nerve sleeve;
the two outer pipe fittings can be respectively sleeved on the peripheries of the two ends of the nerve sleeve, and the outer pipe fittings are fixedly connected with the nerve sleeve;
the clamping pieces are arranged in two, the clamping pieces are arranged in one-to-one correspondence with the outer pipe fittings, and the clamping pieces can be in locking connection with the outer pipe fittings.
As the preferable technical scheme of the nerve sleeve tensile test tool, the outer pipe fitting is provided with a locking blind hole; the clamping piece is provided with a locking through hole; the nerve sleeve tensile test tool comprises a locking piece, and the locking piece can penetrate through the locking through hole and is in threaded connection with the locking blind hole.
As the preferable technical scheme of the nerve sleeve tensile test fixture, each clamping piece comprises two clamping heads, the two clamping heads are oppositely arranged, and the two clamping heads are respectively arranged on two sides of the same outer pipe fitting;
the locking pieces are four, two locking blind holes are formed in two sides of each outer pipe fitting, one locking through hole is formed in each chuck, and the locking pieces are in one-to-one correspondence with the locking blind holes and the locking through holes.
As the preferable technical scheme of the nerve sleeve tensile test fixture, the outer pipe is provided with grooves along the axial direction, and one or more grooves are formed in the grooves.
As the preferable technical scheme of the nerve sleeve tensile test fixture, the thickness of the gap between the outer pipe fitting and the inner plug fitting is equal to the thickness of the nerve sleeve.
As the preferable technical scheme of the nerve sleeve tensile test tool, the inner plug piece is in threaded connection with the nerve sleeve.
As the preferable technical scheme of the nerve sleeve tensile test tool, the inner plug piece comprises a handle part and a supporting part, wherein the supporting part can be arranged in the nerve sleeve, and the handle part is arranged at one end of the supporting part.
As the preferable technical scheme of the nerve sleeve tensile test fixture, the length of the supporting part is smaller than half of the length of the nerve sleeve.
In a second aspect, the present invention provides a nerve sleeve tensile test method, which adopts the nerve sleeve tensile test fixture according to any one of the above schemes, and the nerve sleeve tensile test method includes:
respectively plugging the two inner plugs into the interiors of the two ends of the nerve sleeve;
respectively sleeving the two outer pipe fittings at the outer parts of the two ends of the nerve sleeve;
clamping and locking the two clamping pieces on the outer parts of the two outer pipe pieces respectively;
respectively installing the two clamping pieces on a tensile testing machine, and starting the tensile testing machine to reversely stretch the two clamping pieces along the axial direction of the nerve sleeve;
and when the middle part of the nerve sleeve is broken, recording the numerical value of the tensile testing machine at the moment, and obtaining the tensile strength of the nerve sleeve.
As the preferable technical scheme of the nerve sleeve tensile test method, one end of the nerve sleeve is sequentially provided with the inner plug piece, the outer tube piece and the clamping piece, and the other end of the nerve sleeve is sequentially provided with the inner plug piece, the outer tube piece and the clamping piece.
The invention has the beneficial effects that:
the nerve sleeve tensile test fixture provided by the invention is used for auxiliary test of the tensile strength of the nerve sleeve, and the nerve sleeve tensile test method is carried out by adopting the nerve sleeve tensile test fixture. The nerve sleeve tensile test tool comprises an inner plug piece, an outer pipe piece and a clamping piece, wherein the inner plug piece is respectively plugged into the inner parts of two ends of the nerve sleeve, so that effective support is provided for the clamping position of the nerve sleeve, the nerve sleeve is prevented from being damaged or deformed due to excessive clamping force, and the nerve sleeve can be effectively prevented from falling off at the clamping position due to stress deformation; the two ends of the nerve sleeve are respectively sleeved with the outer pipe fitting, so that the direct clamping contact with the nerve sleeve is avoided, the surface strength of the nerve sleeve is damaged, the contact area between the inside and outside of the nerve sleeve and the nerve sleeve tensile test tool is increased by the inner plug fitting and the outer pipe fitting, the stability of the nerve sleeve is protected, and the slipping is prevented; the clamping piece is used for fixing the nerve sleeve through clamping the outer pipe fitting connected with the two ends of the nerve sleeve, and can also be used for locking the clamping piece and the outer pipe fitting to prevent the clamping piece and the outer pipe fitting from slipping off, so that the aim of fastening the nerve sleeve is achieved, the nerve sleeve is effectively protected from being damaged by additional jacking, and the nerve sleeve is further clamped. By using the nerve sleeve tensile test tool, the problem that the clamping part of the nerve sleeve is deformed, slipped or broken in the tensile test process is avoided, and the strength of the nerve sleeve is protected; the method has the advantages that each tensile test can be normally performed, the success rate of the tensile test and the accuracy of data are improved, the test loss of the nerve sleeve is saved, and the cost of the tensile test is saved.
Drawings
FIG. 1 is a schematic structural diagram of a nerve sleeve tensile test fixture provided in an embodiment of the present invention;
FIG. 2 is a front view of a nerve sleeve tensile test fixture provided by an embodiment of the present invention;
FIG. 3 is a schematic view of an inner plug of a nerve sleeve tensile test fixture according to an embodiment of the present invention;
fig. 4 is a schematic view of an outer tube of a nerve sleeve tensile test fixture according to an embodiment of the present invention.
In the figure:
1. an inner plug; 11. an operation hole; 12. a handle portion; 13. a support part;
2. an outer tube; 21. slotting;
3. a clamping member; 31. a chuck; 32. a clamping groove;
4. a locking member;
100. a nerve cuff.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
In a first aspect, as shown in fig. 1 to 4, the present invention discloses a nerve sleeve tensile test fixture for assisting in testing the tensile strength of a nerve sleeve 100. The nerve sleeve tensile test fixture comprises an inner plug 1, an outer tube 2 and a clamping piece 3, wherein the inner plug 1 and the outer tube 2 are arranged at two ends of the nerve sleeve 100; the two ends of the nerve sleeve 100 are respectively internally plugged with the inner plug 1, so that effective support is provided for the clamping position of the nerve sleeve 100, the damage or deformation of the nerve sleeve 100 caused by excessive clamping force is prevented, and the falling-off of the nerve sleeve 100 at the clamping position due to forced deformation can be effectively avoided; the outer pipe fittings 2 are sleeved outside the two ends of the nerve sleeve 100 respectively, so that the nerve sleeve 100 is prevented from being directly clamped and contacted, and the surface strength of the nerve sleeve 100 is prevented from being damaged; the inner plug piece 1 and the outer tube piece 2 jointly increase the contact area between the inner part and the outer part of the nerve sleeve 100 and the nerve sleeve tensile test tool, protect the stability of the nerve sleeve 100, avoid the clamping part from being extruded by the shearing force and prevent slipping. Then, the clamping piece 3 is through the outer tube 2 of centre gripping with nerve sleeve 100 both ends connection in order to fix nerve sleeve 100, can also lock clamping piece 3 and outer tube 2, prevent both slippage, and then reach the purpose of fastening nerve sleeve 100, not only effectively protected nerve sleeve 100 not receive extra roof damage, still further clamped nerve sleeve 100, nerve sleeve tensile test frock is whole stronger with nerve sleeve 100 installation stability, and the protection to nerve sleeve 100 is more in place.
In this embodiment, be equipped with locking blind hole and locking through-hole respectively on outer tube 2 and holder 3, nerve sleeve tensile test frock still includes retaining member 4 simultaneously, and retaining member 4 can pass the locking through-hole and with locking blind hole threaded connection, further prevent the slippage. The clamping piece 3 can be further provided with a locking protrusion, and correspondingly, the outer pipe 2 is provided with a locking groove matched with the locking protrusion, so that the outer pipe 2 and the clamping piece 3 can be locked and fixed. Illustratively, an anti-slip rubber pad can be arranged at the contact position of the outer pipe 2 and the clamping piece 3, so that damping is improved, and falling risk is reduced.
Specifically, a clearance gap is provided between the outer tube 2 and the inner plug 1, the thickness of the clearance gap is equal to that of the nerve cuff 100, and the nerve cuff 100 is tightly wrapped by the outer tube 2 and the inner plug 1.
As the preferential technical scheme of nerve sleeve tensile test frock, in order to make the inner chamber of outer tube spare 2 can laminate completely with nerve sleeve spare 100 outside surface, be provided with fluting 21 along the axial on outer tube spare 2, guarantee nerve sleeve spare 100 and outer tube spare 2 area of contact is the biggest, and outer tube spare 2 can have stronger cohesion. Illustratively, the slot 21 may be provided with one or more slots, so that the nerve sleeve 100 can be better matched, when the locking piece 4 is used, the outer tube 2 is locked with the clamping piece 3 through the locking through hole formed in the clamping piece 3 and the locking blind hole of the outer tube 2, and the nerve sleeve 100 is further completely held tightly under the condition of interaction force because the outer tube 2 is laterally provided with the slot 21, and the inner wall and the outer wall of the nerve sleeve 100 are respectively tightly attached to the inner wall of the outer tube 2 and the outer wall of the inner plug 1, so that the nerve sleeve is fixed.
Illustratively, the outer tube 2 is respectively sleeved outside the two ends of the nerve sleeve 100 in a spiral manner, the contact area between the nerve sleeve 100 and the outer tube 2 is increased by the threaded contact, and the installation is firmer; similarly, the inner plug 1 can also be a screw plug, the inner plug 1 is in threaded connection with the nerve sleeve 100, the inner wall of the nerve sleeve 100 is embedded in the threads on the outer wall of the inner plug 1 in a extrusion force and screw anastomosis mode, the contact area between the nerve sleeve 100 and a nerve sleeve tensile test tool is further increased, and the nerve sleeve 100 is prevented from slipping out of the clamping piece 3.
As shown in fig. 2 and 3, an operation hole 11 is formed at one end of the inner plug 1, and an operation member is added to the nerve sleeve tensile test fixture in a matched manner, and the operation member is matched with the operation hole 11, so that the inner plug 1 can be prolonged, and a worker can conveniently operate the inner plug 1 to plug into the nerve sleeve 100 by means of the operation member which can be selectively connected with the inner plug 1.
Illustratively, the inner plug 1 includes a handle portion 12 and a support portion 13, the support portion 13 being disposed inside the nerve cuff 100 for supporting the nerve cuff 100; the handle portion 12 is disposed at one end of the support portion 13, so that a worker can hold the inner plug 1 conveniently, and the inner plug 1 is matched with the nerve cuff 100 in place. The handle 12 can be provided with an operation hole 11, and the operation piece is matched with the installation and use of the nerve sleeve tensile test tool and the nerve sleeve 100 under different condition scenes.
Further, the length of the supporting portion 13 needs to be smaller than half of the length of the nerve sleeve 100, so that interference cannot occur under the condition that both ends of the nerve sleeve 100 are plugged into the inner plug 1, normal stretching deformation can be ensured to exist in the middle section of the nerve sleeve 100, and data accuracy of a stretching test cannot be affected.
Specifically, each clamping piece 3 comprises two clamping heads 31, the two clamping heads 31 are oppositely arranged, and the two clamping heads 31 are respectively arranged at two sides of the same outer pipe fitting 2, so that the nerve sleeve 100 can be better clamped; illustratively, each clamping member 3 also includes three or four clamping heads 31, which ensure that the nerve cuff 100 is clamped uniformly, as the nerve cuff 100 is sized larger, the more clamping heads 31 of each clamping member 3, the better and more stable the clamping effect.
Illustratively, the contact position between each chuck 31 and the outer tube 2 is provided with the clamping groove 32, so that the outer tube 2 can be better clamped and limited, the nerve sleeve 100 is prevented from being radially extruded, deformed and slipped, meanwhile, the gap is reasonably kept away, and the chucks 31 are prevented from folding the nerve sleeve 100 due to the linear error during installation, and the result of the tensile test is not affected.
In this embodiment, four locking members 4 are provided, and two locking members 4 are provided at each end of the nerve cuff 100; two slots 21 are formed in the outer pipe fitting 2 to divide the outer pipe fitting 2 into two petals, and each petal is provided with a locking blind hole; the clamping piece 3 comprises two clamping heads 31, and each clamping head 31 is provided with a locking through hole; the locking pieces 4 are arranged in one-to-one correspondence with the locking blind holes and the locking through holes.
Preferably, the number of the clamping heads 31 of each clamping member 3 and the number of the slots 21 of the outer tube 2 can be cooperatively arranged, each clamping head 31 and each valve on the outer tube 2 can be in one-to-one correspondence, and then corresponding numbers of locking through holes, locking blind holes and locking members 4 are arranged at corresponding positions for combining, so that the nerve sleeve 100 can be clamped more stably.
In a second aspect, the invention discloses a nerve sleeve tensile test method, which adopts the nerve sleeve tensile test tool in any one of the above schemes, and the tensile test method comprises the following steps: first, two inner plugs 1 are respectively plugged into the interiors of two ends of the nerve sleeve 100; then, the two outer tube pieces 2 are respectively sleeved outside the two ends of the nerve sleeve 100; then the two clamping pieces 3 are respectively clamped outside the two outer pipe pieces 2 and locked; next, the two clamping pieces 3 are respectively installed on a tensile testing machine, and the tensile testing machine is started to enable the two clamping pieces 3 to reversely move along the axial direction of the nerve sleeve 100; when the middle part of the nerve sleeve 100 is broken, the numerical value of the tensile testing machine at the moment is recorded, and the tensile strength of the nerve sleeve 100 is obtained. The tensile test method can avoid the problem that the clamping part of the nerve sleeve 100 is deformed, slipped or broken in the tensile test process, and protect the strength of the nerve sleeve 100; the tensile test can be normally performed every time, the success rate of the tensile test and the accuracy of data are improved, the test loss of the nerve cuff 100 is saved, and the cost of the tensile test is saved.
It can be understood that when the nerve sleeve 100 is installed, the inner plug 1, the outer tube 2, the clamping member 3 and the locking member 4 can be sequentially installed at one end of the nerve sleeve 100, and then the above steps are repeated at the other end of the nerve sleeve 100 after completion, so that a worker can automatically use a more convenient and time-saving installation sequence. The operator can also choose to install the inner plug 1 more easily by using the operating member.
In this embodiment, the tensile testing machine is a detection machine commonly used in the market, belongs to the prior art, and does not belong to the key protection scope of the present invention, and will not be described in detail herein.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. Nerve sleeve tensile test frock, its characterized in that includes:
the nerve sleeve comprises two inner plugs (1), wherein the two inner plugs (1) are arranged, and the two inner plugs (1) can be respectively plugged into the interiors of two ends of the nerve sleeve (100);
the nerve sleeve comprises two outer pipe fittings (2), wherein the two outer pipe fittings (2) are respectively sleeved on the peripheries of two ends of the nerve sleeve (100), and the outer pipe fittings (2) are fixedly connected with the nerve sleeve (100);
clamping pieces (3), clamping pieces (3) are provided with two, clamping pieces (3) with outer tube (2) one-to-one sets up, clamping pieces (3) can with outer tube (2) locking connection.
2. The nerve sleeve tensile test fixture according to claim 1, wherein the outer tube (2) is provided with a locking blind hole; the clamping piece (3) is provided with a locking through hole; the nerve sleeve tensile test tool comprises a locking piece (4), and the locking piece (4) can penetrate through the locking through hole and is in threaded connection with the locking blind hole.
3. The nerve sleeve tensile test fixture according to claim 2, wherein each clamping piece (3) comprises two clamping heads (31), the two clamping heads (31) are oppositely arranged, and the two clamping heads (31) are respectively arranged on two sides of the same outer pipe piece (2);
the locking pieces (4) are four, two locking blind holes are formed in two sides of each outer pipe (2), one locking through hole is formed in each clamping head (31), and the locking pieces (4) are in one-to-one correspondence with the locking blind holes and the locking through holes.
4. The nerve sleeve tensile test fixture according to claim 1, characterized in that the outer tube (2) is provided with slots (21) in the axial direction, the slots (21) being provided with one or more.
5. The nerve sleeve tensile test fixture according to claim 1, characterized in that the gap thickness between the outer tube (2) and the inner plug (1) is equal to the thickness of the nerve sleeve (100).
6. The nerve sleeve tensile test fixture according to claim 1, characterized in that the inner plug (1) is in threaded connection with the nerve sleeve (100).
7. The nerve sleeve tensile test fixture according to claim 1, wherein the inner plug (1) comprises a handle portion (12) and a supporting portion (13), the supporting portion (13) can be placed inside the nerve sleeve (100), and the handle portion (12) is arranged at one end of the supporting portion (13).
8. The nerve sleeve tensile test fixture according to claim 7, characterized in that the length of the support portion (13) is less than half the length of the nerve sleeve (100).
9. A nerve sleeve tensile test method, characterized in that the nerve sleeve tensile test fixture according to any one of claims 1-8 is adopted, and the nerve sleeve tensile test method comprises:
two inner plugs (1) are respectively plugged into the interiors of two ends of the nerve sleeve (100);
respectively sleeving the two outer pipe fittings (2) at the outer parts of the two ends of the nerve sleeve (100);
clamping and locking the two clamping pieces (3) outside the two outer pipe pieces (2) respectively;
respectively installing the two clamping pieces (3) on a tensile testing machine, and starting the tensile testing machine to enable the two clamping pieces (3) to be reversely stretched along the axial direction of the nerve sleeve (100);
and when the middle part of the nerve sleeve (100) is broken, recording the numerical value of the tensile testing machine at the moment, and obtaining the tensile strength of the nerve sleeve (100).
10. The nerve sleeve tensile test method according to claim 9, wherein one end of the nerve sleeve (100) is sequentially provided with the inner plug (1), the outer tube (2) and the clamping piece (3), and the other end of the nerve sleeve (100) is sequentially provided with the inner plug (1), the outer tube (2) and the clamping piece (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311744489.9A CN117420012B (en) | 2023-12-19 | 2023-12-19 | Nerve sleeve tensile test tool and nerve sleeve tensile test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311744489.9A CN117420012B (en) | 2023-12-19 | 2023-12-19 | Nerve sleeve tensile test tool and nerve sleeve tensile test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117420012A true CN117420012A (en) | 2024-01-19 |
| CN117420012B CN117420012B (en) | 2024-03-15 |
Family
ID=89530646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311744489.9A Active CN117420012B (en) | 2023-12-19 | 2023-12-19 | Nerve sleeve tensile test tool and nerve sleeve tensile test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117420012B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4116422A1 (en) * | 1991-05-18 | 1992-11-19 | Oberspree Habelwerk Gmbh | Tubular or pipe shaped test bodies clamping system for tensile testing machine - has two clamping places each provided with one or more part holding ring with conical through bore and conical plug |
| CN103630447A (en) * | 2013-11-29 | 2014-03-12 | 沈阳黎明航空发动机(集团)有限责任公司 | High-temperature tensile testing method for whole metal pipe and special fixture used in high-temperature tensile testing method |
| CN105158082A (en) * | 2015-08-31 | 2015-12-16 | 中国船舶重工集团公司第七二五研究所 | Auxiliary device for metal pipe high-temperature tension test and application method of auxiliary device |
| CN204988872U (en) * | 2015-09-25 | 2016-01-20 | 中国航空工业集团公司沈阳发动机设计研究所 | Pipe fitting torsion test anchor clamps |
| CN110057666A (en) * | 2018-01-19 | 2019-07-26 | 兰州兰石重型装备股份有限公司 | Pipe fitting total cross-section tension test tooling and its application method |
| CN110286050A (en) * | 2019-07-23 | 2019-09-27 | 西安热工研究院有限公司 | A kind of slow tensile stress etching pilot system of full pipe sample high-temperature high pressure water of metal tube |
| CN110806348A (en) * | 2019-11-28 | 2020-02-18 | 中国航发沈阳黎明航空发动机有限责任公司 | Clamp and method suitable for high-temperature stretching detection of small-specification metal pipe |
| CN211602681U (en) * | 2019-11-18 | 2020-09-29 | 浙江省交通运输科学研究院 | Steel strand tensile test clamping device for prestressed concrete |
| CN113804541A (en) * | 2021-08-13 | 2021-12-17 | 浙江大学 | Steel pipe sample for tensile test in high-pressure hydrogen environment and preparation method thereof |
| CN217237477U (en) * | 2022-01-24 | 2022-08-19 | 西安汉唐分析检测有限公司 | Metal thin-wall pipe fatigue test clamp assembly |
| CN217277310U (en) * | 2021-09-15 | 2022-08-23 | 上海华龙测试仪器有限公司 | Minimally invasive medical flexible pipe tensile testing device |
| CN116898517A (en) * | 2023-09-08 | 2023-10-20 | 泓欣科创(北京)科技有限公司 | Nerve repair fixing device |
-
2023
- 2023-12-19 CN CN202311744489.9A patent/CN117420012B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4116422A1 (en) * | 1991-05-18 | 1992-11-19 | Oberspree Habelwerk Gmbh | Tubular or pipe shaped test bodies clamping system for tensile testing machine - has two clamping places each provided with one or more part holding ring with conical through bore and conical plug |
| CN103630447A (en) * | 2013-11-29 | 2014-03-12 | 沈阳黎明航空发动机(集团)有限责任公司 | High-temperature tensile testing method for whole metal pipe and special fixture used in high-temperature tensile testing method |
| CN105158082A (en) * | 2015-08-31 | 2015-12-16 | 中国船舶重工集团公司第七二五研究所 | Auxiliary device for metal pipe high-temperature tension test and application method of auxiliary device |
| CN204988872U (en) * | 2015-09-25 | 2016-01-20 | 中国航空工业集团公司沈阳发动机设计研究所 | Pipe fitting torsion test anchor clamps |
| CN110057666A (en) * | 2018-01-19 | 2019-07-26 | 兰州兰石重型装备股份有限公司 | Pipe fitting total cross-section tension test tooling and its application method |
| CN110286050A (en) * | 2019-07-23 | 2019-09-27 | 西安热工研究院有限公司 | A kind of slow tensile stress etching pilot system of full pipe sample high-temperature high pressure water of metal tube |
| CN211602681U (en) * | 2019-11-18 | 2020-09-29 | 浙江省交通运输科学研究院 | Steel strand tensile test clamping device for prestressed concrete |
| CN110806348A (en) * | 2019-11-28 | 2020-02-18 | 中国航发沈阳黎明航空发动机有限责任公司 | Clamp and method suitable for high-temperature stretching detection of small-specification metal pipe |
| CN113804541A (en) * | 2021-08-13 | 2021-12-17 | 浙江大学 | Steel pipe sample for tensile test in high-pressure hydrogen environment and preparation method thereof |
| CN217277310U (en) * | 2021-09-15 | 2022-08-23 | 上海华龙测试仪器有限公司 | Minimally invasive medical flexible pipe tensile testing device |
| CN217237477U (en) * | 2022-01-24 | 2022-08-19 | 西安汉唐分析检测有限公司 | Metal thin-wall pipe fatigue test clamp assembly |
| CN116898517A (en) * | 2023-09-08 | 2023-10-20 | 泓欣科创(北京)科技有限公司 | Nerve repair fixing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117420012B (en) | 2024-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN117420012B (en) | Nerve sleeve tensile test tool and nerve sleeve tensile test method | |
| US8091640B2 (en) | Method and device for cementing a well or a pipe | |
| CA2379799C (en) | Radial tire for automobile | |
| BR112016010272B1 (en) | TRACTION ROPE AND METHOD TO MOLD BELTS IN EXPANSION MOLDS | |
| JP2014509277A (en) | Assembly drum with locking device | |
| CN217237477U (en) | Metal thin-wall pipe fatigue test clamp assembly | |
| CN104568405B (en) | Slips strength test device and its system | |
| CN206708606U (en) | A kind of reparation clamping and pressing fitting | |
| CN204286928U (en) | Composite insulator measurer for pulling force | |
| US10962150B2 (en) | Rubber hose | |
| US8814077B2 (en) | Self centering core adapter and method | |
| CN110749502A (en) | Submarine cable bonding performance test system and test method | |
| JP5829181B2 (en) | Pipe laying method and pipe used for the laying method | |
| CN212844668U (en) | Clamping head for tensile test of steel cable | |
| CN219694740U (en) | Clamp for carbon fiber core rod test | |
| CN107084324A (en) | The method for dismounting of glass tube fluorescent tube finished product plug | |
| CN210232777U (en) | Detection equipment for automobile air conditioner compressor | |
| CN207480170U (en) | The flank of tooth for automobile starter Gear Processing crushes error prevention device | |
| US10406764B2 (en) | Method for repairing a composite part | |
| CN215339220U (en) | Switching device of wire rope tension tester | |
| CN217665281U (en) | Air turbine starter oil slide pipe test device | |
| CN204835462U (en) | Cable quick -operation joint | |
| CN111113113A (en) | Eight-claw clamp mechanism for inner support or outer clamp of numerical control lathe | |
| CN218761887U (en) | Pre-buried facility that blocks water | |
| CN220138709U (en) | Cable end connecting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |