Bone wax pusher

Abstract

The utility model discloses a bone wax pushing-in device which comprises a shell, a heating cylinder and a heating resistance wire, the heating cylinder is provided with a feeding port and a discharging port, the feeding port is connected with a feeding cylinder, the feeding cylinder penetrates out of the shell, and a pushing piston with an oval section is arranged in the feeding cylinder; a replaceable injection needle is in threaded connection with the discharge hole; and one end of the material pushing plug is connected with a material pushing rod, one end, penetrating through the heating cylinder, of the material pushing rod is fixedly provided with a material pushing rod, and the material pushing rod is connected with a material pushing driving mechanism. According to the bone wax coating device, the heating cylinder and the heating resistance wire are arranged, the heating resistance wire can heat the heating cylinder so as to melt bone wax in the heating cylinder, meanwhile, the heating resistance wire can conduct heat preservation on the melted bone wax in the heating cylinder, and when the injection needle is used for coating the bone wax, the bone wax is prevented from being solidified; and the coating effect of the bone wax is ensured.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a bone wax pusher. Background Art

[0002] Bone wax is a mixture of sterilized beeswax (70%) and petroleum jelly (30%). It is white or light yellow in color and has excellent softening properties. Once softened by hand, it can be molded. It is non-toxic. It physically blocks capillary bleeding in the bone marrow and can be used to stop bleeding in emergency patients. Bone wax has a wide range of uses, including for bone fractures of various ages, locations, and causes, as well as for stopping bleeding from bone marrow capillaries caused by skull drilling or fragmentation. It can also be used to apply or fill bone wounds during orthopedic surgery.

[0003] Patent document CN205006937U discloses a bone waxing device, including a handle, an applicator head, and an applicator head motion limiter. The device is provided with an applicator head motion limiter, which can limit the motion position of the applicator head, thereby preventing damage to adjacent skin, nerves and other tissues. However, the device can only be used to apply bone wax to the bleeding site of the bone after the bone wax is heated and melted, so that a small amount of bone wax will occur during the transfer and application process, and a small amount of solidified bone wax will remain in the bone waxing device after each application, and the solidified bone wax will affect the next bone wax application operation. Therefore, in response to the above problems, it is necessary to propose a bone wax pusher that can effectively prevent the bone wax from solidifying prematurely and ensure the effect of each bone wax application. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a bone wax pusher.

[0005] In order to achieve the above-mentioned purpose of the invention, the technical solution adopted by the utility model is: it includes a shell, a heating tube installed in the shell and a heating resistance wire wrapped around the outside of the heating tube, the cross-section of the heating tube is elliptical, and the heating tube is provided with a feed port and a discharge port, the feed port is connected to a feeding tube, the feeding tube passes through to the outside of the shell, and a pushing piston with an elliptical cross-section is provided in the feeding tube; a replaceable injection needle is threadedly connected to the discharge port; one end of the pushing piston is connected to a pushing rod, the pushing rod passes through the heating tube, and the pushing rod is connected to a pushing drive mechanism.

[0006] Furthermore, the pushing drive mechanism includes a driving sleeve, which is nested outside the pushing rod and threadedly connected to the pushing rod. A driven gear is fixed to the outside of the driving sleeve, the driven gear is connected to a transmission gear, the transmission gear is connected to a driving gear, and the driving gear is fixed on the output shaft of the driving motor.

[0007] Furthermore, the outside of the driving sleeve and the push rod are both provided with a rotating shaft sleeve, the movable sleeve and the push rod are rotatably provided on the rotating shaft sleeve, and the outside of the driving sleeve and the push rod are provided with a limiting convex ring that cooperates with the rotating shaft sleeve.

[0008] Furthermore, the shell includes a main cavity and a handle portion, the main cavity is cylindrical, and the heating cylinder and the push drive mechanism are installed in the main cavity.

[0009] Furthermore, a feed button, a return button and a power switch are provided on the handle.

[0010] Furthermore, a plurality of heat-insulating mounting rings are provided on the outside of the heating cylinder, and the heat-insulating mounting rings are made of heat-insulating ceramics, heat-insulating asbestos or rock wool.

[0011] Furthermore, an external thread is provided on the outside of the top of the push plug, and an internal thread matching the external thread is provided on the top of the feeding cylinder.

[0012] Furthermore, the heating cylinder includes a cylindrical heating barrel, a conical material guiding portion and a discharging cylinder which are connected in sequence, and the cylindrical heating barrel, the conical material guiding portion and the discharging cylinder are integrally formed.

[0013] Furthermore, the heating tube is made of iron, aluminum or copper.

[0014] Furthermore, the injection needle includes a connecting barrel and an injection needle tube. The inner wall of the connecting barrel is provided with an internal thread that cooperates with the discharge port. The connecting barrel is provided with an injection hole for installing the injection needle tube. The connecting barrel and the injection needle tube are integrally formed.

[0015] The beneficial effects of the utility model are:

[0016] The utility model is provided with a heating tube and a heating resistance wire. The heating resistance wire can heat the heating tube, thereby melting the bone wax in the heating tube. At the same time, the heating resistance wire can keep the melted bone wax in the heating tube warm, so that when the bone wax is applied by an injection needle, the bone wax is prevented from solidifying, thereby ensuring the application effect of the bone wax.

[0017] The utility model is equipped with a push drive mechanism that drives the push rod and push piston to move telescopically, thereby using the push piston to push the melted bone wax in the heating cylinder out of the injection needle. By threading injection needles of different diameters on the discharge port, bone wax can be applied to bone sections of different sizes.

[0018] The heating cylinder of the utility model is provided with a feeding cylinder, and a pushing plug is provided in the feeding cylinder. The bone wax in the heating cylinder can be heated first by the feeding cylinder and the pushing plug is used. The bone wax is added into the feeding cylinder and can be pushed into the heating cylinder through the pushing plug, thereby realizing the feeding of aggregate into the heating cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 for Figure 1 A partial enlarged view in FIG.

[0021] Figure 3 Schematic diagram of the cooperation between the push plug and the push rod;

[0022] The symbols of the components are as follows:

[0023] 1. Housing; 11. Main chamber; 12. Handle; 2. Heating cylinder; 21. Feeding cylinder; 22. Push plug; 23. External thread; 24. Thermal insulation mounting ring;

[0024] 3. Heating resistance wire; 4. Injection needle; 5. Push piston; 6. Push rod; 7. Push drive mechanism; 71. Drive sleeve; 72. Driven gear; 73. Transmission gear; 74. Driving gear; 75. Drive motor; 76. Rotating shaft sleeve; 8. Feed button; 9. Return button. DETAILED DESCRIPTION

[0025] The specific implementation methods of the present invention are described below to facilitate understanding of the present invention by those skilled in the art. However, it should be clear that the present invention is not limited to the scope of the specific implementation methods. For those skilled in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the appended claims, these changes are obvious, and all utility model creations using the concept of the present invention are protected.

[0026] like Figure 1 As shown, the bone wax pusher includes a housing 1, a heating tube 2 mounted within the housing 1, and a heating resistor 3 wound around the outside of the heating tube 2. The heating resistor 3 is used to heat the heating tube 2 to a set temperature, thereby heating the aggregate in the heating tube 2 to the operating temperature. The heating tube 2 has an elliptical cross-section and is provided with a feed port and a discharge port. The feed port is connected to a feeding tube 21, which extends to the outside of the housing 2. The feeding tube 21 contains a pushing piston 5 with an elliptical cross-section. A replaceable injection needle 4 is threadedly connected to the discharge port. By replacing the injection needle 4 with a different diameter, bone wax coating can be applied to different bone fracture cross-sections.

[0027] like Figure 2 and 3As shown, one end of the pusher piston 5 is connected to a pusher rod 6, which extends through the heating tube 2 and is connected to a pusher drive mechanism 7. This pusher drive mechanism 7 is used to drive the pusher piston 5 via the pusher rod 6, thereby using the pusher piston 5 to push the aggregate in the heating tube 2 out of the injection needle 4 at the discharge port. The aggregate is then applied to the surface of the broken bone where hemostasis is required. A conical portion can be provided on the front side of the pusher piston 5 to mate with the tapered portion on the front side of the heating tube 2, thereby completely pushing the aggregate out of the heating tube 2.

[0028] The pushing drive mechanism 7 includes a driving sleeve 71, which is nested on the outside of the pushing rod 6 and is threadedly connected to the pushing rod 6. A driven gear 72 is fixed to the outside of the driving sleeve 71, and the driven gear 72 is connected to a transmission gear 73. The transmission gear 73 is connected to a driving gear 74, and the driving gear 74 is fixed on the output shaft of the driving motor 75. When the pushing drive mechanism 7 controls the extension and retraction of the driving sleeve 71 and uses the pushing piston 5 to push the aggregate out, the specific principle is that the driving motor 75 drives the transmission gear 73 to rotate through the active gear 74, and the transmission gear 73 drives the driven gear 72 to rotate, and the driven gear 72 thereby drives the driving sleeve 71 to rotate. The inner wall of the driving sleeve 71 is connected to the external thread of the pushing rod 6. The driving sleeve 71 rotates to drive the pushing rod 6 to move horizontally, and the pushing rod 6 thereby drives the pushing piston 5 to move. Specifically, since the cross-sectional areas of the pushing piston 5 and the heating cylinder 2 are both elliptical, the driving sleeve 71 can drive the pushing rod 6 to extend and retract, thereby controlling the movement of the pushing piston 5 through the pushing rod 6, thereby realizing the pushing operation of the pushing piston 5 on the bone wax in the heating cylinder 2.

[0029] The driving sleeve 71 and the push rod 6 are both provided with a rotating shaft sleeve 76 on the outside. The movable sleeve 71 and the push rod 6 are rotatably provided on the rotating shaft sleeve 76. The driving sleeve 71 and the push rod 6 are provided with a limiting convex ring on the outside to cooperate with the rotating shaft sleeve 76. Figure 2 Two rotating shaft sleeves 76 are provided on the outside of the driving sleeve 71, a rotating shaft sleeve 76 is provided on the outside of the pushing rod 6, and two limiting protruding rings are provided on the outside of the driving sleeve 71, so that the driving sleeve 71 is rotatably installed on the two driving sleeves 71; a rotating shaft sleeve 76 is provided on the outside of the end of the heating tube 2, so as to rotationally support and limit the pushing rod 6.

[0030] The housing 1 includes a main cavity 11 and a handle 12. The main cavity 11 is cylindrical, and the heating cylinder 2 and the push drive mechanism 7 are mounted within the main cavity 11. The handle 12 can be provided with a curved, wavy portion for easy gripping by medical personnel. The handle 12 is provided with a feed button 8, a return button 9, and a power switch. The feed button 8, return button 9, and power switch are all connected to a control board, which is a PCB board equipped with a C51 single chip. The feed button 8 is used to control the drive motor 75 to rotate at a constant speed, thereby driving the push rod 6 through the push drive mechanism 7 to extend and retract, allowing the push piston 5 to push the heated bone wax out of the heating cylinder 2. The return button 9 is used to extend and retract the push rod 6 to its shortest stroke, thereby facilitating the addition of bone wax using the feeding cylinder 21. A control board is also included, which is used to control the forward and reverse rotation of the drive motor 75 and the heating temperature of the heating resistor 3. The power switch is used to control the power supply on and off. The temperature control and power supply of the bone wax pusher can be controlled by existing hot melt glue gun methods. The volume of the heating cylinder 2 is preferably 10ml. By pressing the stroke or touching the switch, the control panel controls the feeding of 1ml at a time. A display module can also be added to display the percentage of bone wax in the heating cylinder 2 in real time, so that the operator can easily know the remaining aggregate in the pusher. The percentage of aggregate displayed can be an integer multiple of 0.1.

[0031] The heater cartridge 2 is externally provided with several insulating mounting rings 24, made of insulating ceramic, asbestos, or rock wool. Preferably, three insulating mounting rings 24 are provided, and the heater cartridge 2 is mounted to the housing via these three insulating mounting rings 24. These insulating mounting rings 24 effectively insulate the heater cartridge 2, protecting the housing 1 from high temperatures.

[0032] The top outer side of the push plug 22 is provided with an external thread 23, and the top of the feeding barrel 21 is provided with an internal thread that matches the external thread 23. When it is necessary to add aggregate to the heating barrel 2, bone wax is first added to the heating barrel 21, and the bone wax is pushed into the heating barrel 2 by using the push plug 22 to add the aggregate to the heating barrel 2. The above operation is repeated until the heating barrel 2 is filled with sufficient aggregate. Finally, the external thread 23 on the top outer side of the feeding barrel 21 and the internal thread on the top of the feeding barrel 21 are threadedly connected to fix the push plug 22 to the feeding barrel 21.

[0033] The heating cylinder 2 comprises a cylindrical heating barrel, a conical guide, and a discharge cylinder, which are connected in sequence from left to right. These three components are integrally formed. The cylindrical heating barrel heats the bone wax until it melts, while the conical guide discharges the melted wax. The discharge cylinder is connected to the injection needle 4.

[0034] The heating cylinder 2 is made of iron, aluminum, or copper. The injection needle 4 consists of a connecting barrel and a syringe. The inner wall of the connecting barrel is provided with internal threads that mate with the discharge port. The connecting barrel is provided with an injection hole for receiving the syringe. The connecting barrel and syringe are integrally formed. The injection needle 4 is similar to the inflation needle used for basketballs or footballs. By replacing the injection needle 4 with syringes of different diameters, the bone wax applicator can be adapted for applying bone wax to bone end faces of varying sizes.

[0035] Working process and principle: Before operation, first install the injection needle 4 at the discharge port of the heating cylinder 2, then add bone wax into the feeding cylinder 21, and then push the bone wax in the feeding cylinder 21 into the heating cylinder 2 through the pushing plug 22 until an appropriate amount of bone wax is added to the heating cylinder 2, and then install the pushing plug 22 into the pushing plug 22 and make a threaded connection to complete the sealing and fixation of the pushing plug 22 to the feeding cylinder 21. Then the heating resistance wire 3 is energized to heat the heating tube 2 to the set temperature, so that the aggregate in the heating tube 2 is melted. After the heating resistance wire 3 is heated for a period of time, the aggregate in the heating tube 2 is completely melted. At this time, the bone wax pusher can be used to apply bone wax to the bleeding area on the bone. Specifically, by pressing the feed button 8, the feed button 8 controls the drive motor 75 to be energized, and the drive motor 75 rotates at a constant speed. The drive motor 75 drives the transmission gear 73, the driven gear 72 and the drive sleeve 71 to rotate in sequence through the active gear 74, so as to drive the pusher rod 6 to extend and retract. Since the pusher piston 5 and the heating tube 2 both have elliptical cross-sections, the pusher piston 5 and the heating tube 2 cannot rotate relative to each other, so that the drive sleeve 71 rotates to drive the pusher rod 6 and the pusher piston 5 to extend and retract, thereby pushing the melted aggregate in the heating tube 2 out through the pusher piston 5, and the melted aggregate is discharged from the needle tip of the injection needle 4, so as to be used for the bone wax coating operation on the bleeding area on the bone.

Claims

1. A bone wax pusher, characterized in that: The invention comprises a shell (1), a heating cylinder (2) installed in the shell (1), and a heating resistance wire (3) wound around the outside of the heating cylinder (2), wherein the cross section of the heating cylinder (2) is elliptical, the heating cylinder (2) is provided with a feed port and a discharge port, the feed port is connected to a feeding cylinder (21), a pushing plug (22) is provided in the feeding cylinder (21), the feeding cylinder (21) extends to the outside of the shell (1), and a pushing piston (5) with an elliptical cross section is provided in the feeding cylinder (21); a replaceable injection needle (4) is threadedly connected to the discharge port; One end of the pushing piston (5) is connected to a pushing rod (6), the pushing rod (6) passes through the heating cylinder (2), and the pushing rod (6) is connected to a pushing drive mechanism (7).

2. The bone wax pusher according to claim 1, characterized in that: The push drive mechanism (7) includes a drive sleeve (71), the drive sleeve (71) is nested outside the push rod (6), the drive sleeve (71) is threadedly connected to the push rod (6), a driven gear (72) is fixed to the outside of the drive sleeve (71), the driven gear (72) is connected to a transmission gear (73), the transmission gear (73) is connected to a driving gear (74), and the driving gear (74) is fixed to the output shaft of the drive motor (75).

3. The bone wax pusher according to claim 2, characterized in that: The driving sleeve (71) and the push rod (6) are both provided with a rotating shaft sleeve (76) on the outside. The movable sleeve (71) and the push rod (6) are rotatably provided on the rotating shaft sleeve (76). The driving sleeve (71) and the push rod (6) are both provided with a limiting convex ring that cooperates with the rotating shaft sleeve (76) on the outside.

4. The bone wax pusher according to claim 1, characterized in that: The housing (1) comprises a main cavity (11) and a handle portion (12); the main cavity (11) is cylindrical; the heating cylinder (2) and the material pushing drive mechanism (7) are installed in the main cavity (11).

5. The bone wax pusher according to claim 4, characterized in that: The handle portion (12) is provided with a feed button (8), a return button (9) and a power switch.

6. The bone wax pusher according to claim 1, characterized in that: A plurality of heat-insulating mounting rings (24) are provided on the outside of the heating cylinder (2), and the heat-insulating mounting rings (24) are heat-insulating ceramics, heat-insulating asbestos, or rock wool.

7. The bone wax pusher according to claim 1, characterized in that: An external thread (23) is provided on the outside of the top of the push plug (22), and an internal thread matching the external thread (23) is provided on the top of the feeding cylinder (21).

8. The bone wax pusher according to claim 1, characterized in that: The heating cylinder (2) comprises a cylindrical heating barrel, a conical material guide portion and a discharge cylinder which are connected in sequence, and the cylindrical heating barrel, the conical material guide portion and the discharge cylinder are integrally formed.

9. The bone wax pusher according to claim 1, characterized in that: The heating tube (2) is made of iron, aluminum or copper.

10. The bone wax pusher according to claim 1, characterized in that: The injection needle (4) comprises a connecting barrel and an injection needle tube, the inner wall of the connecting barrel is provided with an internal thread that matches the discharge port, the connecting barrel is provided with an injection hole for installing the injection needle tube, and the connecting barrel and the injection needle tube are integrally formed.

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