CN112957604B - Self-suction wax-supplementing positive-pressure bone wax pen - Google Patents

Self-suction wax-supplementing positive-pressure bone wax pen Download PDF

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Publication number
CN112957604B
CN112957604B CN202110336164.1A CN202110336164A CN112957604B CN 112957604 B CN112957604 B CN 112957604B CN 202110336164 A CN202110336164 A CN 202110336164A CN 112957604 B CN112957604 B CN 112957604B
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wax
pen
bone
outlet cavity
cavity
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CN112957604A (en
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尹腾昆
蒋群龙
刘超
郝继恒
肖以磊
张利勇
王继跃
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Liaocheng people's hospital
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Liaocheng people's hospital
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M35/00Devices for applying media, e.g. remedies, on the human body
    • A61M35/003Portable hand-held applicators having means for dispensing or spreading integral media

Abstract

The invention relates to a self-absorption wax-supplementing positive pressure bone wax crayon which comprises a crayon body for providing a power supply and a pen point inserted and matched with an electrode of the crayon body, wherein the pen point comprises a wax storage cavity, a heating rod fixed at the axial center inside the wax storage cavity, a wax outlet cavity sleeved on the radial outer wall of the heating rod and a pen point connected to the head part of the wax outlet cavity in a threaded manner; the wax outlet cavity is fixed in the wax storage cavity by a limiting sleeve and can move back and forth towards the pen body; a plurality of grooves parallel to the axial direction are formed in the radial outer wall of the heating rod and the position, sleeved with the wax outlet cavity, of the radial outer wall of the heating rod, and when the wax outlet cavity is emptied to be in a negative pressure state after the pen point is pressed, the wax in the wax storage cavity is replenished into the wax outlet cavity through the grooves; the self-suction wax-supplementing positive-pressure bone wax pencil can automatically supplement pre-loaded bone wax in the wax storage cavity to the wax outlet cavity, so that the wax outlet continuity of the bone wax pencil is ensured; the bone wax can be filled into bleeding bone seams by the positive pressure of wax discharge given when the pen point is pressed, so that the problem that the bleeding bone seams are difficult to fill the bone wax is solved, and the operation is simple and reliable.

Description

Self-suction wax-supplementing positive-pressure bone wax pen
Technical Field
The invention relates to the field of medical instruments, in particular to a self-suction wax-supplementing positive pressure type bone crayon.
Background
Among surgical procedures, the repair of bone fractures and the cutting and repair of bones are common surgical procedures in which hemostasis of bone seams or bone wounds has traditionally been addressed using bone wax; the bone wax is a material for blocking capillary blood seepage of marrow by a physical method, and can be used for stopping bleeding when bone seepage of various first-aid patients occurs; the main component of the bone wax is beeswax, the traditional method is that harder solid bone wax is repeatedly kneaded to be softer and then is directly pressed and smeared on a bleeding bone surface, a bone seam or a bone hole by fingers, but the traditional method needs medical workers to knead the bone wax by hands, and the solid bone wax is used for hemostasis of a long and narrow bone seam or a bone hole with a deeper position, so that the problem of time and labor consumption is caused, and the operation time is greatly prolonged for an operation needing a large amount of bone surface hemostasis operation; for long, narrow and deep bone seams, bone wax cannot be filled in the bone seams by the traditional method, and the pressureless liquid bone wax cannot permeate into bleeding bone seams to effectively stop bleeding by means of self gravity; in addition, the excessive solid bone wax is easy to remain in the tissue gaps, which causes unnecessary foreign body residue in the body, unnecessary obstruction in the operation caused by adhesion on the gloves of the operator or surgical instruments, and the problem of untimely blood stopping in the operation caused by the complicated applying mode.
Disclosure of Invention
In order to solve the technical problem, the invention provides a self-absorption wax-supplementing positive pressure bone wax crayon which comprises a crayon body for providing a power supply and a pen point inserted and matched with a pen body electrode, wherein the pen point comprises a wax storage cavity, a heating rod fixed at the axial center of the inner part of the wax storage cavity, a wax outlet cavity sleeved on the radial outer wall of the heating rod and a pen point connected to the head part of the wax outlet cavity in a threaded manner; the wax outlet cavity is fixed in the wax storage cavity by a limiting sleeve and can move back and forth towards the pen body; when the pen point is pressed, the wax outlet cavity retracts, the volume of the wax outlet cavity extruded by the heating rod is reduced, and positive wax outlet pressure can be given, so that the liquid bone wax can be filled into bleeding bone seams, and the problem that the bleeding bone seams are difficult to fill the bone wax is solved; a plurality of grooves parallel to the axial direction are formed in the radial outer wall of the heating rod and the position, sleeved with the wax outlet cavity, of the radial outer wall of the heating rod, and when the wax outlet cavity is emptied to be in a negative pressure state after the pen point is pressed, the wax in the wax storage cavity is replenished into the wax outlet cavity through the grooves; the self-suction wax-supplementing positive pressure type bone wax pencil can automatically supplement bone wax pre-installed in the wax storage cavity to the wax outlet cavity, the wax outlet continuity of the bone wax pencil is guaranteed, and the bone wax pencil is simple and reliable to operate.
The technical scheme of the invention is as follows:
a self-suction wax-supplementing positive-pressure bone wax crayon comprises a crayon body for providing a power supply and a pen point inserted and matched with a pen body electrode, wherein the pen point comprises a wax storage cavity, a heating rod fixed at the axial center of the inner part of the wax storage cavity, a wax outlet cavity sleeved on the radial outer wall of the heating rod and a press type pen point in threaded connection with the head of the wax outlet cavity; the wax outlet cavity is fixed in the wax storage cavity by a limiting sleeve and can move back and forth towards the pen body; the heating rod comprises a main barrel fixed at the bottom of an inner cavity of the wax storage cavity and an auxiliary barrel in telescopic sliding sleeve connection with the main barrel, and the end face, far away from the pen body, of the auxiliary barrel is buckled on the pen point in an abutting mode and provides support and restoring force for the pen point; a plurality of grooves parallel to the axial direction are arranged on the radial outer wall of the main cylinder at the position where the main cylinder is sleeved with the wax outlet cavity; the side wall of the wax storage cavity is provided with a plurality of air holes, the size of each air hole can pass through air but can not pass through bone wax, when the wax outlet cavity is emptied to be in a negative pressure state, wax in the wax storage cavity is filled into the wax outlet cavity through the grooves, and the air holes are used for balancing air pressure in the wax storage cavity.
The wax storage cavity is a single-opening frustum with a cylindrical middle part hollowed, the opening head of the frustum of the wax storage cavity is provided with internal threads, the limiting sleeve is designed into a ring sleeve corresponding to the opening of the wax storage cavity, and the outer diameter side surface of the limiting sleeve is provided with external threads corresponding to the internal threads of the wax storage cavity; the wax outlet cavity is a cylinder which is hollowed in the axial direction, the outer diameter of the wax outlet cavity corresponds to the inner diameter of the circular ring of the limiting sleeve, and the wax outlet cavity can axially move relative to the limiting sleeve; an annular boss is arranged on the outer cylindrical wall of the wax outlet cavity, the outer diameter of the boss is larger than the inner diameter of the ring of the limiting sleeve, and when the limiting sleeve fixes the wax outlet cavity at the axial position of the pen head, the wax outlet cavity can only move back and forth towards the pen body due to the unidirectional limiting of the boss; the bone wax overflow device is characterized in that an annular groove with a square cross section is formed in the inner wall of the ring of the limiting sleeve, a sealing ring is arranged in the groove, and the sealing ring is used for preventing bone wax after being heated and melted from overflowing and seeping out.
The inner diameter of the end table corresponds to the outer diameter of the main barrel, and the end table can axially slide relative to the main barrel; a spring in a compressed state is arranged in the auxiliary cylinder of the heating rod, one end of the spring is propped and buckled on the inner end face, close to the pen point, of the auxiliary cylinder, the other end of the spring is propped and buckled on a fixing plate arranged in the main cylinder, and the fixing plate is clamped and limited on a limiting block in the main cylinder; the heating rod is provided with heating resistance wires at the bottom ends of the fixing plate and the main barrel, the spring is made of high-resistance materials and is electrically connected with the resistance wires, and when the resistance wires are electrified and heated, the spring is also electrified to generate heat; the radial section of the digging groove on the main cylinder is semicircular or square, and the length of the digging groove is larger than the thickness of the end platform.
The pen point also comprises a cylindrical base connected with the wax outlet cavity, a frustum-shaped needle point connected with the base and a movable pen core arranged at the head of the needle point; the end part, close to the pen point, of the inner wall of the wax outlet cavity is provided with an internal thread, the outer wall, connected with the wax outlet cavity, of the base is provided with an external thread corresponding to the internal thread of the wax outlet cavity, and the wax outlet cavity is in threaded connection with the base.
The refill is designed to be a spherical cone, the outer end face, far away from the pen body, of the auxiliary barrel abuts against the bottom end of the cone of the refill, and the restoring force of a spring in the auxiliary barrel is larger than the pressure of the external atmosphere on the refill; the pen comprises a pen core, a needle point and a pen needle, and is characterized in that two slide ways protruding towards the axial direction are arranged on the inner wall of the needle point, two slide grooves are arranged on the side wall of the pen core, and the slide grooves of the pen core are connected with slide rails of the slide ways of the needle point.
The pen core is designed to be spherical, and the diameter of the pen core is larger than the diameter of an opening of a small opening of the needle tip frustum; the outer end face, far away from the pen body, of the auxiliary barrel abuts against the pen core.
The pen point is designed to be quickly detached at one time, and comprises a wax storage cavity for pre-packaging bone wax, a heating rod with a telescopic head part, and a spherical pen core which is sealed and limited by the wax storage cavity and is propped and fixed by the heating rod; the wax storage cavity comprises a cylindrical base with a hollow inner part and a frustum-shaped pen point connected with the base, and the diameter of a small opening of a frustum of the pen point is smaller than that of the pen core; the heating rod comprises a main cylinder connected with the bottom of the wax storage cavity and an auxiliary cylinder movably connected with a spring of the main cylinder, an axial counter bore is formed in the head of the main cylinder, a compression spring is arranged in the counter bore, one end of the spring is fixed at the bottom of the counter bore, and the other end of the spring abuts against the inner end face, far away from the pen body, of the auxiliary cylinder; the spring is made of high-resistance materials and is electrically connected with the heating resistance wire in the main barrel, and when the resistance wire is electrified and heated, the spring is also electrified to generate heat; the outer end face of the auxiliary barrel, far away from the pen body, abuts against the pen core.
The ball-shaped outer surface of the refill is provided with a plurality of pits, and the pits are used for storing bone wax and increasing the wax output of the bone wax crayon; the projection shape of the pit on the surface of the pen core is regular hexagon or round and the like.
The invention has the following beneficial effects:
1. when the pen point is pressed, the opening of the needle point is opened, the wax outlet cavity moves towards the pen body and is separated from the groove, and gas in the wax outlet cavity is extruded out by the heating rod; when the pressing on the pen point is released, the pen core is rebounded preferentially and locks the opening of the pen point, the wax outlet cavity is pushed by the heating rod to move back, when the end platform of the wax outlet cavity moves to the groove digging position of the heating rod, the wax outlet cavity is in a negative pressure state, and the wax in the wax storage cavity is sucked into the wax outlet cavity by the negative pressure in the wax outlet cavity; in the same reason, when the wax in the wax outlet cavity is extruded out of the opening of the needle tip, the wax outlet cavity is in a vacuum state, and the wax outlet cavity can automatically supplement bone wax; the wax supplementing mode is stable and reliable, and the wax discharging continuity of the bone wax pencil is ensured; because the bone wax has certain resistance to flow, when the restoring force of the spring of the auxiliary cylinder is greater than the flow resistance of the bone wax, the pen core can be pushed back to the needle point opening by the auxiliary cylinder and is sealed, and when the pen is lifted to the sealed opening, the redundant bone wax at the needle point outlet can be sucked back by the wax outlet cavity, so that the wax is prevented from being dropped or pulled.
2. According to the invention, the side wall of the wax storage cavity is provided with the plurality of air holes, the size of each air hole can pass through air but cannot pass through bone wax, when wax in the wax storage cavity is filled into the wax outlet cavity by the grooves, the air holes are used for balancing air pressure in the wax storage cavity, negative pressure formed in the wax storage cavity when the wax storage cavity is filled with wax in the wax outlet cavity is avoided, the wax filling effect of the wax outlet cavity is not influenced, and the air pressure balancing mode is simple and effective.
3. The outer cylindrical wall of the wax outlet cavity is provided with an annular boss, the outer diameter of the boss is larger than the inner diameter of a ring of the limiting sleeve, and when the limiting sleeve fixes the wax outlet cavity at the axial position of the wax storage cavity, the wax outlet cavity can only move back and forth towards the pen body due to the unidirectional limiting of the boss; the limiting mode of the boss is stable and reliable, and the wax outlet cavity is effectively prevented from sliding out of the wax storage cavity.
4. The inner wall of the ring of the limiting sleeve is provided with the annular groove with the square cross section, the groove is internally provided with the sealing ring, and the sealing ring is used for preventing bone wax melted by heating from overflowing and seeping out, avoiding the bone wax from flowing out of the outer wall of the wax outlet cavity to influence the operation and reducing the cleaning time of the pen head.
5. The spring is designed to be made of a high-resistance material and is electrically connected with the heating resistance wire in the main barrel, and when the resistance wire is electrified and heated, the spring is also electrified to generate heat, so that the heat at the position of a pen point is ensured to be provided; the problems of solidification or flow rate reduction and the like caused by insufficient heating of the wax outlet of the pen point are avoided.
6. The needle point of the pen point is connected with the pen core through the sliding rail, and the connection and movement mode of the pen core is stable and smooth; and the refill is extruded at the opening of the needle point by the auxiliary barrel of the heating rod, when the refill is pressed to move towards the pen body, the refill and the needle point opening form an annular gap, bone wax can fully and uniformly flow out of the gap, the wax is uniformly discharged, and the wax discharge amount is large.
7. The limiting sleeve is in threaded connection with the wax storage cavity, the pen point is in threaded connection with the wax outlet cavity, the connection mode is simple, the sealing effect is good, and the quick disassembly and cleaning are convenient.
8. The whole bone wax pen is small, exquisite and portable, and is convenient for hemostasis operation at all azimuth angles during operation; when the battery is connected with the battery, the bone wax hemostasis operation can be performed in an outdoor temporary rescue place, and the use flexibility is increased.
9. The pen body and the pen point are in electrode insertion and matching connection, the electrodes not only have a conductive effect, but also can limit the position of the pen point on the pen body and be inserted, matched and locked, the connection and fixation of the pen point are simple and accurate, and the electricity conduction is safe and stable.
10. The spring is designed in the heating rod, so that the influence of bone wax on the expansion and contraction of the spring is avoided, the use stability of the bone wax pen is improved, and the service life of the bone wax pen is prolonged.
11. The ball-shaped refill can be designed into a ball shape, the outer surface of the ball shape is provided with a plurality of concave pits, and when the refill rotates, the concave pits are used for storing bone wax and increasing the wax output of the bone wax crayon, so that the wax output of the bone wax crayon is more uniform.
12. The restoring force of the spring is greater than the pressure of the external air pressure on the refill, so that the air is prevented from flowing backwards and flowing back out of the wax cavity, and a one-way valve structure is formed; when the refill is extruded by external force, the bone wax in the wax outlet cavity is extruded out of the wax by the heating rod, the higher the extrusion pressure is, the higher the wax outlet pressure is, and the problem that the bone wax cannot permeate into bone seams is solved.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is an enlarged view of the circle position of FIG. 1;
FIG. 3 is a cross-sectional view of the nib of the present invention;
FIG. 4 is a cross-sectional view of a wax outlet chamber of the present invention;
FIG. 5 is a cross-sectional view of the stop collar of the present invention;
FIG. 6 is a radial cross-sectional view of a grooved location of the heater bar of the present invention;
FIG. 7 is a radial cross-sectional view of a heater bar according to the present invention;
FIG. 8 is a schematic view of a second embodiment of the present invention;
FIG. 9 is an enlarged view taken from circle 8 of the present invention;
FIG. 10 is a schematic view of a second and third pen core according to the embodiment of the present invention;
FIG. 11 is a schematic view of a three-nib according to an embodiment of the present invention.
The reference numbers in the figures denote:
1-pen body, 2-pen point, 21-wax storage cavity, 211-air hole, 212-base, 22-heating rod, 221-main cylinder, 222-auxiliary cylinder, 223-groove digging, 224-spring, 225-fixing plate, 226-limiting block, 227-counter bore, 23-wax outlet cavity, 231-boss, 232-end table, 24-pen point, 241-base, 242-needle point, 2421-slideway, 243-pen core, 2431-slideway, 2432-pit, 25-limiting sleeve, 251-groove and 252-sealing ring.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
The first embodiment is as follows:
referring to fig. 1 to 7, a self-priming wax-supplementing positive pressure bone wax pencil comprises a pencil body 1 for providing a power supply and a pencil head 2 inserted and matched with an electrode of the pencil body 1, wherein the pencil head 2 comprises a wax storage cavity 21, a heating rod 22 fixed at the axial center in the wax storage cavity 21, a wax outlet cavity 23 sleeved on the radial outer wall of the heating rod 22 and a pressing type pencil point 24 in threaded connection with the head of the wax outlet cavity 23; the wax outlet cavity 23 is fixed in the wax storage cavity 21 by a limit sleeve 25 and can move back and forth towards the pen body 1; the heating rod 22 comprises a main barrel 221 fixed at the bottom of the inner cavity of the wax storage cavity 21 and an auxiliary barrel 222 telescopically and slidably sleeved with the main barrel 221, and the end face, far away from the pen body 1, of the auxiliary barrel 222 is abutted against the pen point 24 and provides support and restoring force for the pen point 24; a plurality of grooves 223 parallel to the axial direction are formed in the radial outer wall of the main cylinder 221 and the sleeving position of the wax outlet cavity 23; the side wall of the wax storage cavity 21 is provided with a plurality of air holes 211, the size of the air holes 211 can pass through air but can not pass through bone wax, when the wax outlet cavity 23 is emptied to be in a negative pressure state, the wax in the wax storage cavity 21 is supplemented into the wax outlet cavity 23 through the grooves 223, and the air holes 211 are used for balancing the air pressure in the wax storage cavity 21.
Further, the wax storage cavity 21 is a single-opening frustum with a cylindrical middle part hollowed, an internal thread is arranged at the head of the opening of the frustum of the wax storage cavity 21, the limiting sleeve 25 is designed to be a circular sleeve corresponding to the opening of the wax storage cavity 21, and an external thread corresponding to the internal thread of the wax storage cavity 21 is arranged on the side surface of the outer diameter of the limiting sleeve 25; the wax outlet cavity 23 is a cylinder hollowed in the axial direction, the outer diameter of the wax outlet cavity 23 corresponds to the inner diameter of a circular ring of the limiting sleeve 25, and the wax outlet cavity 23 can axially move relative to the limiting sleeve 25; an annular boss 231 is arranged on the cylindrical outer wall of the wax outlet cavity 23, the outer diameter of the boss 231 is larger than the inner diameter of a ring of the limiting sleeve 25, and when the limiting sleeve 25 fixes the wax outlet cavity 23 at the axial position of the pen point 2, the wax outlet cavity 23 can only move back and forth towards the pen body 1 due to the one-way limiting of the boss 231; an annular groove 251 with a square cross section is formed in the inner wall of the ring of the limiting sleeve 25, a sealing ring 252 is arranged in the groove 251, and the sealing ring 252 is used for preventing melted bone wax from overflowing and seeping out.
Further, an annular end table 232 extending inwards in the axial direction is arranged at one end of the wax outlet cavity 23 close to the pen body 1, the inner diameter of the end table 232 corresponds to the outer diameter of the main cylinder 221, and the end table 232 can slide axially relative to the main cylinder 221; a compressed spring 224 is arranged in the auxiliary cylinder 222 of the heating rod 22, one end of the spring 224 abuts against and is buckled on the inner end face, close to the pen tip 24, of the auxiliary cylinder 222, the other end of the spring abuts against and is buckled on a fixing plate 225 arranged in the main cylinder 221, and the fixing plate 225 is clamped and limited on a limiting block 226 in the main cylinder 221; the heating rod 22 is provided with heating resistance wires at the bottom ends of the fixing plate 225 and the main cylinder 221, the spring 224 is made of high-resistance material and is electrically connected with the resistance wires, and when the resistance wires are electrified and heated, the spring 224 is also electrified to generate heat; the radial section of the grooves 223 on the main cylinder 221 is semicircular or square, and the length of the grooves 223 is larger than the thickness of the end table 232.
Further, the pen tip 24 further comprises a cylindrical base 241 connected with the wax outlet cavity 23, a frustum-shaped needle tip 242 connected with the base 241, and a movable pen core 243 arranged at the head of the needle tip 242; the end part of the inner wall of the wax outlet cavity 23 close to the pen point 24 is provided with an internal thread, the outer wall of the base 241 connected with the wax outlet cavity 23 is provided with an external thread corresponding to the internal thread of the wax outlet cavity 23, and the wax outlet cavity 23 is in threaded connection with the base 241.
Further, the refill 243 is designed to be a spherical cone, the outer end surface of the secondary barrel 222 away from the pen body 1 abuts against the bottom end of the refill 243, and the restoring force of the spring 224 in the secondary barrel 222 is greater than the pressure of the external atmosphere on the refill 243; two slide ways 2421 protruding towards the axial direction are arranged on the inner wall of the needle point 242, two slide ways 2431 are arranged on the side wall of the pen core 243, and the slide ways 2431 of the pen core 243 are connected with the slide ways 2421 of the needle point 242 in a sliding rail mode.
The working principle of the invention is as follows:
solid bone wax or melted bone wax is put into the wax storage cavity 21 of the bone wax pencil, after the bone wax is solidified in the wax storage cavity 21, the wax outlet cavity 23 and the wax storage cavity 21 are fixed by a limiting sleeve 25, and the pencil head 2 and the pencil body 1 are connected together; then, the power supply of the pen body 1 is switched on, after bone wax in the wax storage cavity 21 is melted, the pen core 243 of the pen point 24 is pressed, the pen core 243 moves towards the pen body 1 and forms an annular gap with the needle point 242, the opening of the needle point 242 is opened, the wax outlet cavity 23 moves towards the pen body 1 and is separated from the digging groove 223, and air in the wax outlet cavity 23 is extruded by the heating rod 22 and is discharged from the opening of the needle point 242; when the pressing on the pen point 24 is released, the auxiliary barrel 222 firstly pushes the pen core 243 back to the needle point 242 to open and seal under the action of the spring 224, and then the pen core 243 together with the wax outlet cavity 23 is pushed by the auxiliary barrel 222 to return to the original position; when the end table 232 of the wax outlet cavity 23 moves to the position of the groove 223 of the heating rod 22, the wax outlet cavity 23 is in a negative pressure state, the wax in the wax outlet cavity 23 is sucked into the wax outlet cavity 23 by the negative pressure in the wax outlet cavity 23, and the bone wax is stored in the wax outlet cavity 23; then, a bone wax pen is used for pressing the position of the bone to be stopped bleeding, the opening of the needle point 242 is opened, the wax outlet cavity 23 moves towards the pen body 1 and is separated from the digging groove 223, the space in the wax outlet cavity 23 is extruded by the heating rod 22, a positive pressure state is formed in the wax outlet cavity 23, and at the moment, the bone wax which is heated and melted is discharged from the gap between the pen core 243 and the needle point 242; when no more wax is discharged from the wax discharge cavity 23, the pressing on the refill 243 of the bone wax crayon is released, because the bone wax has certain resistance to flow, when the restoring force of the spring 224 of the secondary cylinder 222 is greater than the flow resistance of the bone wax, the refill 243 can be pushed back to the needle point 242 opening by the secondary cylinder 222 and is sealed, and when the pen is lifted to be sealed, the excess bone wax at the needle point 242 outlet can be sucked back by the wax discharge cavity 23, so that the wax is prevented from dropping or pulling; then the pen core 243 together with the wax outlet cavity 23 is pushed by the auxiliary cylinder 222 to return to the original position, then the end table 232 of the wax outlet cavity 23 moves to the position of the groove 223 of the heating rod 22, the wax outlet cavity 23 is in a negative pressure state, bone wax supplies wax to the wax outlet cavity 23 through the groove 223 of the heating rod 22, and then bone wax blood replenishing operation is repeated.
Example two:
the second embodiment is different from the first embodiment in that:
referring to fig. 8 to 10, the pen core 243 is designed to be spherical, and the diameter of the pen core 243 is larger than the opening diameter of the small opening of the frustum of the needle point 242; the outer end face of the sub-barrel 222 away from the pen body 1 abuts against the pen core 243.
A plurality of concave pits 2432 are formed in the spherical outer surface of the pen core 243, and the concave pits 2432 are used for storing bone wax and increasing the wax output of the bone wax crayon; the projection shape of the pit 2432 on the surface of the pen core 243 is regular hexagon or round and the like.
Example three:
the third embodiment is different from the first embodiment in that:
referring to fig. 10 to 11, the pen head 2 is designed to be quickly disassembled at one time, the pen head 2 includes a wax storage cavity 21 for pre-packaging bone wax, a heating rod 22 with a retractable head, and a spherical pen core 243 which is sealed and limited by the wax storage cavity 21 and is pressed and fixed by the heating rod 22; the wax storage cavity 21 comprises a cylindrical base 212 with a hollow inner part and a frustum-shaped pen point 24 connected with the base 212, wherein the diameter of a frustum small opening of the pen point 24 is smaller than that of the pen core 243; the heating rod 22 comprises a main cylinder 221 connected with the bottom of the wax storage cavity 21 and an auxiliary cylinder 222 movably connected with the main cylinder 221 through a spring, an axial counter bore 227 is formed in the head of the main cylinder 221, a compression spring 224 is arranged in the counter bore 227, one end of the spring 224 is fixed to the bottom of the counter bore 227, and the other end of the spring 224 abuts against and is buckled on the inner end face, far away from the pen body 1, of the auxiliary cylinder 222; the spring 224 is made of a high-resistance material, the spring 224 is electrically connected with a heating resistance wire in the main barrel 221, and when the resistance wire is electrified and heated, the spring 224 is also electrified to generate heat; the outer end face of the sub-barrel 222 away from the pen body 1 abuts against the pen core 243.
A plurality of concave pits 2432 are formed in the spherical outer surface of the pen core 243, and the concave pits 2432 are used for storing bone wax and increasing the wax output of the bone wax crayon; the projection shape of the pit 2432 on the surface of the pen core 243 is regular hexagon or round and the like.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (6)

1. The self-suction wax-supplementing positive pressure type bone crayon is characterized in that: the wax-removing pen comprises a pen body (1) for providing a power supply and a pen point (2) inserted and matched with an electrode of the pen body (1), wherein the pen point (2) comprises a wax storage cavity (21), a heating rod (22) fixed at the axial center in the wax storage cavity (21), a wax outlet cavity (23) sleeved on the radial outer wall of the heating rod (22), and a pressing type pen point (24) in threaded connection with the head of the wax outlet cavity (23); the wax outlet cavity (23) is fixed in the wax storage cavity (21) by a limiting sleeve (25) and can move back and forth towards the pen body (1); the heating rod (22) comprises a main barrel (221) fixed at the bottom of an inner cavity of the wax storage cavity (21) and an auxiliary barrel (222) telescopically and slidably sleeved with the main barrel (221), and the end face, far away from the pen body (1), of the auxiliary barrel (222) is abutted and buckled on the pen point (24) and provides support and restoring force for the pen point (24); a plurality of digging grooves (223) parallel to the axial direction are formed in the radial outer wall of the main cylinder (221) and the sleeving position of the main cylinder and the wax outlet cavity (23); the side wall of the wax storage cavity (21) is provided with a plurality of air holes (211), the air holes (211) can pass through air but cannot pass through bone wax, when the wax outlet cavity (23) is emptied to be in a negative pressure state, wax in the wax storage cavity (21) is filled into the wax outlet cavity (23) through the grooves (223), and the air holes (211) are used for balancing air pressure in the wax storage cavity (21).
2. The self-priming wax-supplementing positive pressure bone crayon as claimed in claim 1, wherein: the wax storage cavity (21) is a single-opening frustum with a cylindrical middle part hollowed, the head part of the frustum opening of the wax storage cavity (21) is provided with internal threads, the limiting sleeve (25) is designed to be a circular sleeve corresponding to the opening of the wax storage cavity (21), and the outer diameter side surface of the limiting sleeve (25) is provided with external threads corresponding to the internal threads of the wax storage cavity (21); the wax outlet cavity (23) is a cylinder hollowed in the axial direction, the outer diameter of the wax outlet cavity (23) corresponds to the inner diameter of a circular ring of the limiting sleeve (25), and the wax outlet cavity (23) can axially move relative to the limiting sleeve (25); an annular boss (231) is arranged on the outer cylindrical wall of the wax outlet cavity (23), the outer diameter of the boss (231) is larger than the inner diameter of a ring of the limiting sleeve (25), and when the wax outlet cavity (23) is fixed at the axial position of the pen point (2) by the limiting sleeve (25), the wax outlet cavity (23) can only move back and forth towards the pen body (1) due to the one-way limiting of the boss (231); an annular groove (251) with a square cross section is formed in the inner wall of the circular ring of the limiting sleeve (25), a sealing ring (252) is arranged in the groove (251), and the sealing ring (252) is used for preventing overflowing and exuding of bone wax after being heated and melted.
3. The self-priming wax-supplementing positive pressure bone crayon as claimed in claim 2, wherein: one end of the wax outlet cavity (23) close to the pen body (1) is provided with an annular end table (232) extending inwards in the axial direction, the inner diameter of the end table (232) corresponds to the outer diameter of the main cylinder (221), and the end table (232) can axially slide relative to the main cylinder (221); a spring (224) in a compressed state is arranged in the auxiliary cylinder (222) of the heating rod (22), one end of the spring (224) is abutted and buckled on the inner end face, close to the pen point (24), of the auxiliary cylinder (222), the other end of the spring (224) is abutted and buckled on a fixing plate (225) arranged in the main cylinder (221), and the fixing plate (225) is clamped and limited on a limiting block (226) in the main cylinder (221); the heating rod (22) is provided with heating resistance wires at the bottom ends of the fixing plate (225) and the main cylinder (221), the spring (224) is made of high-resistance materials, the spring (224) is electrically connected with the resistance wires, and when the resistance wires are electrified and heated, the spring (224) is also electrified to generate heat; the radial section of the digging groove (223) on the main cylinder (221) is semicircular or square, and the length of the digging groove (223) is larger than the thickness of the end platform (232).
4. The self-priming wax-supplementing positive pressure bone crayon as claimed in claim 3, wherein: the pen point (24) further comprises a cylindrical base (241) connected with the wax outlet cavity (23), a frustum-shaped needle point (242) connected with the base (241) and a movable pen core (243) arranged at the head of the needle point (242); go out wax chamber (23) inner wall and be provided with the internal thread near the tip of nib (24), base (241) are provided with the external screw thread that corresponds with wax chamber (23) internal thread on its outer wall of being connected with wax chamber (23), go out wax chamber (23) with base (241) threaded connection.
5. The self-priming wax-supplementing positive pressure bone crayon of claim 4, wherein: the refill (243) is designed to be a spherical conical head, the outer end face, away from the pen body (1), of the auxiliary barrel (222) abuts against the conical bottom end of the refill (243), and the restoring force of a spring (224) in the auxiliary barrel (222) is larger than the pressure of the external atmosphere on the refill (243); the inner wall of the needle point (242) is provided with two slide ways (2421) protruding towards the axial direction, the side wall of the pen core (243) is provided with two slide ways (2431), and the slide ways (2431) of the pen core (243) are connected with the slide ways (2421) of the needle point (242) in a sliding manner.
6. The self-priming wax-supplementing positive pressure bone crayon of claim 4, wherein: the pen core (243) is designed to be spherical, and the diameter of the pen core (243) is larger than the opening diameter of the small opening of the frustum of the needle point (242); the outer end face, far away from the pen body (1), of the auxiliary barrel (222) abuts against the pen core (243).
CN202110336164.1A 2021-03-29 2021-03-29 Self-suction wax-supplementing positive-pressure bone wax pen Active CN112957604B (en)

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